All Words Glossary

Glossary of Pathology Terms
beginning with letter P
Browse the Pathology Glossary

Paget's disease Tweet Definition of Paget Like Definition of Paget
  1. (disease) The bone disease osteitis deformans.
pallor Tweet Definition of pallor Like Definition of pallor on Facebook
  1. paleness, Paleness; want of color; pallidity.
    of the complexion
palpitate Tweet Definition of palpitate Like Definition of palpitate on Facebook
verb (palpitat, ing)
  1. (intransitive) to throb, beat strongly
palsy Tweet Definition of palsy Like Definition of palsy on Facebook
noun (palsies)
  1. (pathology) Complete or partial muscle paralysis of a body part, often accompanied by a loss of feeling and uncontrolled body movements such as shaking.
  1. to paralyse, either completely or partially
paludism Tweet Definition of paludism Like Definition of paludism on Facebook
  1. malaria
pancreatitis Tweet Definition of pancreatitis Like Definition of pancreatitis on Facebook
  1. Inflammation of the pancreas.
pandemic Tweet Definition of pandemic Like Definition of pandemic on Facebook
  1. A pandemic disease
  1. Widespread; general
  2. Epidemiology Epidemic over a wide geographical area and affecting a large proportion of the population.
World War I might have continued indefinitely if not for a pandemic outbreak of influenza.
papilla Tweet Definition of papilla Like Definition of papilla on Facebook
noun (papillae)
  1. (anatomy) A nipple-like anatomical structure.
paralytic Tweet Definition of paralytic Like Definition of paralytic on Facebook
  1. Somebody suffering from paralysis.
  1. Affected by paralysis, paralysed.
  2. Pertaining to paralysis.
  3. Very drunk.
paralyze Tweet Definition of paralyze Like Definition of paralyze on Facebook
verb (paralyzes, paralyzing, paralyzed, paralyzed)
  1. (transitive) To afflict with paralysis.
  2. (transitive) To render unable to move; to immobilize.
  3. (transitive) To render unable to function properly.
The transport strike paralyzed the city.
paraplegia Tweet Definition of paraplegia Like Definition of paraplegia on Facebook
  1. A condition where the lower half of a patient's body is paralyzed and cannot move.
parasitic Tweet Definition of parasitic Like Definition of parasitic on Facebook
  1. Pertaining to a biological or symbolic parasite.
  2. Drawing upon another organism for sustenance.
  3. exploit, Exploiting another for personal gain.
parasitism Tweet Definition of parasitism Like Definition of parasitism on Facebook
  1. interaction between two organisms, in which one organism (the parasite) benefits and the other (the host) is harmed (dictionary definition). this can also refer to humans eg. a younger sibling is attached to the older sibling like a leech. (not a dictionary definition)
paratyphoid Tweet Definition of paratyphoid Like Definition of paratyphoid on Facebook
  1. paratyphoid fever
  1. Resembling typhoid.
parenchyma Tweet Definition of parenchyma Like Definition of parenchyma on Facebook
  1. the functional part of an organ, as opposed to supporting tissue
  2. the tissue making up most of the non-woody parts of a plant
paresis Tweet Definition of paresis Like Definition of paresis on Facebook
noun (pares, es)
  1. A paralysis which is incomplete or which occurs in isolated areas.
  2. inflammation, Inflammation of the brain as a cause of dementia or paralysis.
paresthesia Tweet Definition of paresthesia Like Definition of paresthesia on Facebook
  1. A sensation of burning, prickling, itching, or tingling of the skin with no obvious cause.
Parkinson's disease Tweet Definition of Parkinson Like Definition of Parkinson
  1. (context, neurology, disease) A chronic neurological disorder resulting in lack of control over movement; poor balance and coordination; and similar symptoms.
paroxysm Tweet Definition of paroxysm Like Definition of paroxysm on Facebook
  1. A random or sudden outburst (of activity).
    • «There, on the soft sand, a few feet away from our elders, we would sprawl all morning, in a petrified of desire, and take advantage of every blessed quirk in space and time to touch each other ... » - w:Vladimir Nabokov, Vladimir Nabokov, w:Lolita, Lolita, 1955
      1. A sudden recurrence of a disease.
pathogenesis Tweet Definition of pathogenesis Like Definition of pathogenesis on Facebook
  1. The origin and development of a disease.
  2. The mechanism whereby something causes a disease.
pathogenic Tweet Definition of pathogenic Like Definition of pathogenic on Facebook
  1. Able to cause (harmful) disease.
While the environment is teeming with bacteria and fungi, most are not .
pathogenicity Tweet Definition of pathogenicity Like Definition of pathogenicity on Facebook
noun (plural:pathogenicitys)
  1. The quality or state of being capable of causing disease.
  2. The quality or state of originating or producing disease.
  3. (biology): The quality of a organism to inflict damage on the host.
pathological Tweet Definition of pathological Like Definition of pathological on Facebook
  1. Pertaining to pathology.
  2. Relating to or caused by a physical or mental disorder.
pathology Tweet Definition of pathology Like Definition of pathology on Facebook
noun (patholog, ies)
  1. (medicine) The branch of medicine concerned with the study of the nature of disease and its causes, processes, development, and consequences.
  2. Any deviation from a healthy or normal condition; abnormality.
pathophysiology Tweet Definition of pathophysiology Like Definition of pathophysiology on Facebook
  1. (pathology) The physiological processes associated with disease or injury.
PCP Tweet Definition of PCP Like Definition of PCP on Facebook
  1. (organic compound) pentachlorophenol
  2. (mathematics) probabilistically checkable proof
peak Tweet Definition of peak Like Definition of peak on Facebook
  1. A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap.
  2. (geography) The top, or one of the tops, of a hill, mountain, or range, ending in a point; often, the whole hill or mountain, esp. when isolated; as, the Peak of Teneriffe.
  3. (nautical) The upper aftermost corner of a fore-and-aft sail; -- used in many combinations; as, peak-halyards, peak-brails, etc.
  4. (nautical) The narrow part of a vessel's bow, or the hold within it.
  5. (nautical) The extremity of an anchor fluke; the bill.
  6. (math) For sine waves, the point at which the value of y is at its maximum.
verb (peaks, peaking, peaked)
  1. To reach a peak or maximum.
    • Historians argue about when the Roman Empire began to and ultimately decay.
Pearl Tweet Definition of Pearl Like Definition of Pearl on Facebook
proper noun
  1. (given name, female) from the English noun pearl
pectoral Tweet Definition of pectoral Like Definition of pectoral on Facebook
  1. (Armor) Protective armor for a horse's breast.
  • 1786: The Poitrinal, Pectoral, or Breast Plate was formed of plates of metal rivetted together, which covered the breast and shoulders of the horse, it was commonly adorned with foliage, or other ornaments engraved or embossed. — Francis Grose, A Treatise on Ancient Armour and Weapons, page 30.
    1. (Armor) A covering or protecting for the breast.
    2. (ecclesiastical) A breastplate, esp. that worn by the Jewish high person.
    3. (ecclesiastical) A clasp or a cross worn on the breast.
    4. A medicine for diseases of the chest organs, especially the lungs.
  1. Of or pertaining to the breast, or chest; as, the pectoral muscles.
  2. Relating to, or good for, diseases of the chest or lungs; as, a pectoral remedy.
  3. (zoology) Having the breast conspicuously colored; as, the pectoral sandpiper.
pediculosis Tweet Definition of pediculosis Like Definition of pediculosis on Facebook
  1. (medicine) infestation with head lice
pellagra Tweet Definition of pellagra Like Definition of pellagra on Facebook
  1. (pathology) A disease primarily caused by a niacin deficiency.
pemphigus Tweet Definition of pemphigus Like Definition of pemphigus on Facebook
  1. (pathology) A severe autoimmune skin disease characterized by pustules and painful blisters, and which can be fatal.
pernicious Tweet Definition of pernicious Like Definition of pernicious on Facebook
  1. Causing death or injury; deadly.
  2. Causing much harm in a subtle way.
    • 1911, w:Emma Goldman, Emma Goldman, s:Anarchism and Other Essays/7, The Hypocrisy of Puritanism,
    • : Puritanism no longer employs the thumbscrew and lash; but it still has a most hold on the minds and feelings of the American people.
pernicious anemia Tweet Definition of pernicious anemia Like Definition of pernicious anemia on Facebook
  1. (pathology) A severe form of anemia caused by vitamin B12 insufficiency.
pertussis Tweet Definition of pertussis Like Definition of pertussis on Facebook
noun (pertuss, es)
  1. (pathology) whooping cough
perversion Tweet Definition of perversion Like Definition of perversion on Facebook
  1. The action of perverting someone or something; humiliation; debasement.
  2. The state of being perverted; depravity; viciousness.
  3. A sexual practice or act considered abnormal; sexual deviance; immorality.
  4. An instance of such abnormal activity or behaviour; rape.
pervert Tweet Definition of pervert Like Definition of pervert on Facebook
  1. One who has been perverted; one who has turned to error.
  2. A sexually perverted person.
  1. (transitive) To turn another way; to divert.
  2. (transitive) To turn from truth, rectitude, or propriety; to divert from a right use, end, or way; to lead astray; to corrupt
pervert the course of justice
  1. To misapply; to misinterpret designedly.
pervert one's words
  1. (intransitive) To become perverted; to take the wrong course.
pest Tweet Definition of pest Like Definition of pest on Facebook
  1. An annoying, often destructive creature.
  2. A person who is annoying.
  3. (slang) Someone with poor social discipline who continually bothers disinterested women.
Stop being such a pest and leave that girl alone!
pestilence Tweet Definition of pestilence Like Definition of pestilence on Facebook
  1. Any epidemic disease that is highly contagious, infectious, virulent and devastating.
pestilent Tweet Definition of pestilent Like Definition of pestilent on Facebook
  1. highly injurious or destructive to life: Deadly.
  2. (informal) annoying.
  3. (archaic) harmful to morals or public order.
petechia Tweet Definition of petechia Like Definition of petechia on Facebook
noun (petechi, ae)
  1. a small spot, especially on an organ, caused by bleeding underneath the skin
  • 1973: It is scurvy. All my authorities agree " weakness, diffused muscular pain, , tender gums, ill breath " and M"Alister has no doubt of it. " Patrick O"Brian, HMS Surprise
petit mal Tweet Definition of petit mal Like Definition of petit mal on Facebook
noun Etymology: from French little illness.
  1. A form of epilepsy where the seizures are characterized as minor, the person becomes vacant or unaware, but not involving spasms and unconsciousness. These seizures are usually brief, lasting up to 30 seconds, and may include twitching. A formal medical term would be absence seizures.
    • Contrast grand mal seizures. category:Medicine
pharyngitis Tweet Definition of pharyngitis Like Definition of pharyngitis on Facebook
noun (pluralpharyngitides)
  1. Inflammation of the pharynx.
phenylketonuria Tweet Definition of phenylketonuria Like Definition of phenylketonuria on Facebook
noun (abbreviated as PKU)
  1. (medicine) a metabolic disorder in which individuals lack the liver enzyme phenylalanine hydroxylase (PAH) which is needed to metabolize the amino acid phenylalanine
phimosis Tweet Definition of phimosis Like Definition of phimosis on Facebook
noun (phimoses)
  1. (medicine) A contraction of the foreskin (either as a stage of development or a pathological condition), which prevents it from being retracted.
  • 1762: "Twill end in a , replied Dr. Slop. " Laurence Sterne, The Life & Opinions of Tristram Shandy, Gentleman (Penguin 2003, p. 361)
phlebitis Tweet Definition of phlebitis Like Definition of phlebitis on Facebook
noun (pluralphlebitides)
  1. (pathology) Inflammation of a vein, usually in the legs.
phlegm Tweet Definition of phlegm Like Definition of phlegm on Facebook
  1. viscid, Viscid mucus secreted in the respiratory and digestive passages.
  2. A watery distilled liquor, in distinction from a spirituous liquor.
  3. One of the four humors of which the ancients supposed the blood to be composed.
  4. sluggishness, Sluggishness of temperament; dullness; want of interest; indifference; coldness.
phosphorism Tweet Definition of phosphorism Like Definition of phosphorism on Facebook
  1. chronic phosphorus poisoning
photophobia Tweet Definition of photophobia Like Definition of photophobia on Facebook
  1. (medicine) Symptom of excessive sensitivity to light and the aversion to bright light.
photosensitive Tweet Definition of photosensitive Like Definition of photosensitive on Facebook
  1. having a reaction to, or able to be affected by, light
photosensitivity Tweet Definition of photosensitivity Like Definition of photosensitivity on Facebook
  1. sensitivity to light, especially a heightened response to light
phthisic Tweet Definition of phthisic Like Definition of phthisic on Facebook
  1. (pathology) A wasting illness of the lungs, such as asthma or tuberculosis; phthisis.
  2. A person suffering from phthisis.
  1. Of or relating to phthisis or tuberculosis; tubercular.
phthisis Tweet Definition of phthisis Like Definition of phthisis on Facebook
noun (phthis, es)
  1. (archaic) an atrophy of the body or part of the body, especially pulmonary tuberculosis
  • 1985: Tired from his journey and his chronic lung weakness, which he had saved from turning to by winter sojourns in Egypt, he was yet goodhumoured enough when his deputy reported the arrival of a gang of Jews who wanted judgment on something or someone. " Anthony Burgess, Kingdom of the Wicked
pica Tweet Definition of pica Like Definition of pica on Facebook
  1. A vitiated appetite that craves what is unfit for food, as chalk, ashes, coal, etc.; chthonophagia.
pigeon-toed Tweet Definition of pigeon-toed Like Definition of pigeon-toed on Facebook
  1. Having toes that point inwards.
pile Tweet Definition of pile Like Definition of pile on Facebook
  1. A hair; hence, the fiber of wool, cotton, and the like; also, the nap when thick or heavy, as of carpeting and velvet.
Velvet soft, or plush with shaggy pile. —Cowper
  1. A covering of hair or fur.
  2. A large stake, or piece of timber, steel section pointed and driven into the earth or drilled and cast reinforced concrete, as at the bottom of a river, or in a harbor where the ground is soft, for the support of a building, a pier, or other superstructure, or to form a cofferdam, etc.
  3. The head of an arrow or spear.
  4. (heraldry) One of the ordinaries or subordinaries having the form of a wedge, usually placed palewise, with the broadest end uppermost.
  5. A mass of things heaped together; a heap; as, a pile of stones; a pile of wood.
  6. A mass formed in layers; as, a pile of shot.
  7. A funeral pile; a pyre.
  8. A large building, or mass of buildings.
  9. A bundle of pieces of wrought iron to be worked over into bars or other shapes by rolling or hammering at a welding heat; a fagot.
  10. A vertical series of alternate disks of two dissimilar metals, as copper and zinc, laid up with disks of cloth or paper moistened with acid water between them, for producing a current of electricity; — commonly called Volta"s pile, voltaic pile, or galvanic pile.
  11. The reverse (or tails) of a coin. (Obs)
  12. A hemorrhoid (usually it is in plural)
pimple Tweet Definition of pimple Like Definition of pimple on Facebook
  1. An inflamed (raised and red) spot on the surface of the skin that is usually painful and fills with pus.
I had to pop that embarrassing , it was huge and on the tip of my nose.
  1. (Slang) An annoying person.
He's such a ! I wish he'd stop being so irritating!
pinkeye Tweet Definition of pinkeye Like Definition of pinkeye on Facebook
  1. a highly contagious form of conjunctivitis
pinta Tweet Definition of pinta Like Definition of pinta on Facebook
noun (pluralpintas)
  1. (British colloquial) A pint of milk.
pit Tweet Definition of pit Like Definition of pit on Facebook
  1. A hole in the ground.
  2. A seed inside a fruit; a stone or pip (Eng.) inside a fruit.
  3. A shell in a drupe containing a seed.
  4. Area at the auto racetrack used for refueling and repairing the cars during a race
  5. (music) A section of the marching band containing mallet percussion instruments and other large percussion instruments too large to march, such as the tam tam. Also, the area on the sidelines where these instruments are placed.
  6. A mine
verb (pit, t, ed)
  1. (transitive) To bring into opposition, as in "to pit one's wits against someone".
  2. (transitive) To make pits in.
Exposure to acid rain pitted the metal.
  1. (transitive) To remove the stone from a stone fruit or the shell from a drupe.
One must a peach to make it ready for a pie.
  1. (context, intransitive, motor racing) To return to the pits during a race for refuelling, tyre changes, repairs etc.
PKU Tweet Definition of PKU Like Definition of PKU on Facebook
  1. phenylketonuria
plague Tweet Definition of plague Like Definition of plague on Facebook
  1. A widespread affliction, calamity, or destructive influx especially when seen as divine retribution.
A of locusts
  1. (disease) The disease "plague", caused by the bacterium Yersinia pestis and mostly known by its variant form bubonic plague.
  2. (pathology) An epidemic or pandemic caused by any pestilence, but specifically by the disease "plague".
verb (plagues, plaguing, plagued, plagued)
  1. (transitive) To harass, pester or annoy someone persistently or incessantly.
Wikis are often plagued by vandalism
  1. (transitive) To afflict someone with a disease or calamity.
pleurisy Tweet Definition of pleurisy Like Definition of pleurisy on Facebook
noun (pluralpleurises)
  1. (pathology) Inflammation of lung pleura.
plumbism Tweet Definition of plumbism Like Definition of plumbism on Facebook
  1. (medicine) A diseased condition, produced by the absorption of lead, common among workers in this metal or in its compounds, as among painters, typesetters, etc. It is characterized by various symptoms, as lead colic, lead line, and wrist drop.
PMS Tweet Definition of PMS Like Definition of PMS on Facebook
  1. performance management system, Performance management system, performance measurement system or performance monitoring system Note that these are NOT synonymous, but are used in the same field, so intended usage should be confirmed if important.
    • 1972, United States. Congress. Senate. Judiciary Committee, Parole Legislation: Hearings Before the Subcommittee on National Penitentiaries
    • :The federal Performance Measurement System () and how It relates to the field of corrections.
    • 2006, Organisation for Economic Co-operation and Development, Survey on Harmonisation and Alignment of Donor Practices: Measuring Aid Harmonisation and Alignment in 14 Partner Countries
    • :A performance monitoring system () exists with formal elements for monitoring poverty reduction in relation to the PARPA.
    • 2006, ibid (in list of acronyms)
    • :: Performance-management system
    • 2006, N. Stolbe, B. List, Extending the Data Warehouse with Company External Data from Competitors' Websites -- A Case Study in the Banking Sector in Joachim Schelp, Robert Winter (editors), Auf dem Weg zur Integration Factory: Proceedings der dw2004- Data Warehousing und EAI
    • :Some authors, (see Simons, 1999) suggest that a performance measurement system should include an external monitor component.
    • premenstrual syndrome, Premenstrual syndrome or premenstrual stress often considered synonymous
    • 1951, Edain McCoy?, Celtic Women's Spirituality
    • :Premenstrual syndrome () takes a lot of bashing in the media. It is true that many women become more aggressive during this period, though they are rarely out of control...Therefore, any symptoms that are perceived as unstable are due to the fact that women act more like men during this phase than at any other time in their cycles.
    • 1980, British Social Biology Council, Social Biology and Human Affairs
    • :By recognising as a clinical entity women are allowed to Indulge In socially disapproved behaviours, and thus have a safety valve for their resentment.
    • 2006, Kristen Brown, Nietzsche And Embodiment: Discerning Bodies and Non-Dualism
    • :By internalizing ideational valuations of , men and women reinforce the appearance of a psychosomatic constitution of .
    • 2006, Phyllis Greenberger, Jennifer Wider (editors), The Savvy Woman Patient: How and Why Sex Difference Affect Your Health
    • :This is called premenstrual syndrome, or . It is not well defined, and more than 100 different symptoms have been attributed to
    • planned maintenance system, Planned maintenance system
    • 1966, United States. Congress. Senate. Armed Services, Military Procurement Authorizations for Fiscal Year 1967, Hearings Before the Committee on Armed Services and the Subcommittee on Department of Defense of the Appropriations Committee ... 89-2
    • :Planned maintenance system for surface missile ships (/SMS) has been instituted to increase system readiness through a major reduction in system downtime.
    • 1990, Brian Moriarity, Harold E. Roland, System Safety Engineering and Management
    • :Have the hazardous materials associated with the system, particularly for the Planned Maintenance System (), been identified?
    • 2002, K Refsing, Early European Writings on Ainu Culture: Religion and Folklore
    • :Oil shall be changed out on compressors in strict accordance with the requirements applicable to that compressor.
    • project management system, Project management system
    • 1971, Boyd C. Paulson, Man-computer Concepts for Project Management
    • :A more comprehensive system now being marketed by IBM, (Project Management System), includes resource allocation.
    • 1974, United States. Congress. House. Appropriations, District of Columbia Appropriations for 1974
    • :Mr. Tiernan. ...You have a chart of performance based on average design and construction performance before . What is ? Mr. Starobin. Project Management System.
    • 2006, Petter Gottschalk, E-Business Strategy, Sourcing And Governance''
    • :We see many changes needed, and IS/IT solutions include executive information system (ElS?), project management system (), research library system (RLS), customer relationship management (CRM), enterprise resources planning (ERP), electronic market places (EMS), and knowledge management system (KMS).
    • package management system, Package management system.
    • w:Pantone Matching System, Pantone Matching System, a proprietary set of color designations