All Words Glossary

Glossary of Anatomy Terms
beginning with letter U
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ulna Tweet Definition of ulna Like Definition of ulna on Facebook
noun (ulnae, pl2=ulnas)
  1. (anatomy) The postaxial bone of the forearm, or branchium, corresponding to the fibula of the hind limb.
umbilical Tweet Definition of umbilical Like Definition of umbilical on Facebook
noun
  1. (aerospace) an umbilical cord connecting an astronaut to a spacecraft etc
adjective
  1. of, or relating to the navel (= umbilicus) or the umbilical cord
umbilical cord Tweet Definition of umbilical cord Like Definition of umbilical cord on Facebook
noun
  1. (anatomy) The flexible structure connecting a foetus with the placenta; which transports nourishment to the foetus and removes waste.
  2. (aerospace) The line that supplies an astronaut with oxygen and communications when outside a spacecraft
  3. (aerospace) any of the various lines connecting a rocket to its launch pad before liftoff
umbilicus Tweet Definition of umbilicus Like Definition of umbilicus on Facebook
noun (umbilici, pl2=umbilicuses)
  1. (anatomy) navel
umbo Tweet Definition of umbo Like Definition of umbo on Facebook
noun (pluralumbones or umbos)
  1. (Armor) The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike.
Quotations
  • 1786: It is thirteen inches diameter, made of wood covered with leather, and an iron plate decorated with nails and mouldings; the boss or umbo projects four inches. — Francis Grose, A Treatise on Ancient Armour and Weapons, page xii.
    1. A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane; as, the umbo in the integument of the larví¦ of echinoderms or in the tympanic membrane of the ear.
    2. (zoology) One of the lateral prominence just above the hinge of a bivalve shell.
upgrowth Tweet Definition of upgrowth Like Definition of upgrowth on Facebook
noun
  1. The process or result of growing up; progress; development.
Quotations
  • The new and mighty of poetry in Italy. - J. R. Green
upper arm Tweet Definition of upper arm Like Definition of upper arm on Facebook
noun
  1. the section of an arm from the elbow to the shoulder.
urethra Tweet Definition of urethra Like Definition of urethra on Facebook
noun (pl=urethras or, in technical usage, urethrae)
  1. (anatomy) The tube through which urine exits the body and, in males, through which semen is ejaculated.
uterine Tweet Definition of uterine Like Definition of uterine on Facebook
adjective
  1. of or pertaining to the uterus
uvea Tweet Definition of uvea Like Definition of uvea on Facebook
noun
  1. (anatomy) The middle of the three concentric layers that make up the eye; it is pigmented and vascular, and comprises of the choroid, the ciliary body, and the iris.
uvula Tweet Definition of uvula Like Definition of uvula on Facebook
noun (pl=uvulas, pl2=uvulae)
  1. (anatomy) The fleshy appendage that hangs from the back of the palate, that closes the nasopharynx during swallowing.
uvular Tweet Definition of uvular Like Definition of uvular on Facebook
adjective
  1. (anatomy) Of or relating to the uvula.
  2. (phonetics) Of a sound, articulated with the uvula.

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