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All Words Glossary

Glossary of Botanical Terms
beginning with letter A
Browse the Botanical Glossary
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abloom Tweet Definition of abloom Like Definition of abloom on Facebook
adverb
  1. (postpositive) In or into bloom; in a blooming state.
abortive Tweet Definition of abortive Like Definition of abortive on Facebook
noun
  1. (Obsolete): That which is born or brought forth prematurely; an abortion. - Shakespeare, Richard III, I-iii
  2. (Obsolete): A fruitless effort or issue.
  3. A medicine to which is attributed the property of causing abortion, abortifacient - Dunglison
adjective
  1. (Rare): Produced by abortion; born prematurely; as, an child.
  2. (Obsolete): Made from the skin of a still-born animal; as, vellum.
  3. (Obsolete): Rendering fruitless or ineffectual.
    Quotations
    • Plunged in that gulf. Milton
  4. Coming to naught; failing in its effect; miscarrying; fruitless; unsuccessful; as, an attempt.
    Quotations
  5. An enterprise. - Prescott
  6. (biology): Imperfectly formed or developed; rudimentary; sterile; as, an organ, stamen, ovule, etc.
  7. (medicine): Causing abortion; as, medicines. - Parr
  8. (medicine): Cutting short; as, abortive treatment of typhoid fever.
abrupt Tweet Definition of abrupt Like Definition of abrupt on Facebook
noun (rfc-level, Noun at L4+ not in L3 POS section)
  1. (poetic) Something which is
    1. Adjective, abrupt.
    • Over the vast abrupt. - Milton =
verb
  1. (transitive) To tear off or asunder; to interrupt suddenly.
    • Till death abrupts them. - Sir T. Browne
adjective (more abrupt or abrupter, most abrupt or abruptest)
  1. Broken off; very steep or craggy, as rocks, precipices, banks; precipitous; as, places.
    • Tumbling through ricks . - Thomson
      1. Without notice to prepare the mind for the event; sudden; hasty; unceremonious.
    • The cause of your departure. - Shakespeare, Henry VI Part I, II-iii
      1. curt, Curt in manner; rude; uncivil; impolite.
      2. Having sudden transitions from one subject to another; unconnected.
    • The party came to an end when the parents of our host arrived.
    • The style, which hath many breaches. - B. Jonson
      1. (botany) Suddenly terminating, as if cut off; truncated.
abscise Tweet Definition of abscise Like Definition of abscise on Facebook
verb (abscis, ing)
  1. (transitive) To cut off.
  2. (intransitive) (botany) To separate by means of abscission.
abscission Tweet Definition of abscission Like Definition of abscission on Facebook
noun ((plural): abscissions)
  1. The act or process of cutting off.
Quotations
  • Not to be cured without the abscission of a member. - w:Jeremy Taylor, Jer. Taylor
    1. The state of being cut off. - Sir T. Browne
    2. rhetoric: A figure of speech employed when a speaker having begun to say a thing stops abruptly: thus, "He is a man of so much honor and candor, and of such generosity -- but I need say no more."
    3. (botany) The separation of a part at a predetermined location, such as a leaf at the base of the petiole.
acarpous Tweet Definition of acarpous Like Definition of acarpous on Facebook
adjective
  1. (Botany): Not producing fruit; unfruitful
acaulescent Tweet Definition of acaulescent Like Definition of acaulescent on Facebook
adjective
  1. (botany) Having no stem or caulis, or only a very short one concealed in the ground - Gray.
accrescent Tweet Definition of accrescent Like Definition of accrescent on Facebook
adjective
  1. Growing; increasing. - Shuckford
  2. (botany) Growing larger after flowering - Gray
accrete Tweet Definition of accrete Like Definition of accrete on Facebook
verb (accret, ing)
  1. (intransitive): To grow together, combine.
Astronomers believe the Earth began to six billion years ago.
  1. (intransitive): To adhere; to grow (to); to be added.
  2. (transitive): To make adhere; to add.
adjective
  1. Characterized by accretion; made up; as, matter.
  2. (botany) Grown together - Gray
accumbent Tweet Definition of accumbent Like Definition of accumbent on Facebook
noun
  1. One who reclines at table.
adjective
  1. Leaning or reclining, as the ancients did at their meals.
Quotations
  • The Roman ... posture in eating. - Arbuthnot
    1. (Botany): Lying against anything, as one part of a leaf against another leaf - Gray
Quotations
  • Accumbent cotyledons have their edges placed against the caulicle. - Eaton
  • acerate Tweet Definition of acerate Like Definition of acerate on Facebook
    noun
    1. (Chemistry): A combination of aceric acid with a salifiable base.
    adjective
    1. Acerose; needle-shaped.
    acerose Tweet Definition of acerose Like Definition of acerose on Facebook
    adjective
    1. (botany) Having the nature of chaff; chaffy.
    acerous Tweet Definition of acerous Like Definition of acerous on Facebook
    adjective
    1. (alternative spelling of, acerose)
    acetabuliform Tweet Definition of acetabuliform Like Definition of acetabuliform on Facebook
    adjective
    1. (botany) Shaped like a saucer or shallow cup.
    achene Tweet Definition of achene Like Definition of achene on Facebook
    noun
    1. (botany) A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; -- called a naked seed by the earlier botanists
    achlamydeous Tweet Definition of achlamydeous Like Definition of achlamydeous on Facebook
    adjective
    1. (botany) Naked; having no floral envelope, neither calyx nor corolla.
    achlorophyllous Tweet Definition of achlorophyllous Like Definition of achlorophyllous on Facebook
    adjective
    1. (context, botany) not having chlorophyll and, hence, unable to engage in photosynthesis
    aciform Tweet Definition of aciform Like Definition of aciform on Facebook
    adjective
    1. Shaped like a needle.
    acinaceous Tweet Definition of acinaceous Like Definition of acinaceous on Facebook
    adjective
    1. (botany): Containing seeds or stones of grapes, or grains like them.
    acinaciform Tweet Definition of acinaciform Like Definition of acinaciform on Facebook
    adjective
    1. (Botany): Scimeter-shaped; as an leaf.
    acinus Tweet Definition of acinus Like Definition of acinus on Facebook
    noun (acini)
    1. (botany) One of the small grains or drupelets which make up some kinds of fruit, as the blackberry, raspberry, etc.
    2. (botany) A grapestone.
    3. (anatomy) One of the granular masses which constitute a racemose or compound gland, as the pancreas; also, one of the saccular recesses in the lobules of a racemose gland. - w:Richard Quain, Richard Quain.
    acotyledon Tweet Definition of acotyledon Like Definition of acotyledon on Facebook
    noun
    1. (botany) A plant that has no cotyledons, as the dodder and all flowerless plants.
    acrogen Tweet Definition of acrogen Like Definition of acrogen on Facebook
    noun
    1. (biology) any flowerless plant whose growth takes place at the tip of the main stem, especially the cryptogam ferns
    acrospire Tweet Definition of acrospire Like Definition of acrospire on Facebook
    noun
    1. the sprout at the end of a seed when it begins to germinate
    (Webster) verb
    1. To put forth the first sprout
    actinomorphic Tweet Definition of actinomorphic Like Definition of actinomorphic on Facebook
    adjective
    1. (botany) (i, of a flower) Having its petals arranged in a radially symmetric fashion.
    aculeus Tweet Definition of aculeus Like Definition of aculeus on Facebook
    noun (pluralaculei)
    1. A prickle growing on the bark, as in some brambles and roses.
    2. A sting.
    adhesion Tweet Definition of adhesion Like Definition of adhesion on Facebook
    noun
    1. The ability of a substance to stick to an unlike substance.
    2. A feeling of attachment (e.g. an infant to its parents).
    3. An agreement to adhere
    4. (medicine) An abnormal union of surface by the formation of new tissue resulting from an inflammatory process.
    agglomerate Tweet Definition of agglomerate Like Definition of agglomerate on Facebook
    noun
    1. A collection or mass.
    2. (geology) A mass of angular volcanic fragments united by heat; distinguished from conglomerate.
    verb (agglomerates, agglomerating, agglomerated)
    1. To wind or collect into a ball; hence, to gather into a mass or anything like a mass.
    adjective
    1. collect, Collected into a ball, heap, or mass.
    agrostology Tweet Definition of agrostology Like Definition of agrostology on Facebook
    noun
    1. the study of grasses
    ALA Tweet Definition of ALA Like Definition of ALA on Facebook
    initialism
    1. Alpha Linolenic Acid
    2. American Library Association
    3. Acacia Leadership Academy
    albumen Tweet Definition of albumen Like Definition of albumen on Facebook
    noun (albumens, pl2=albumina, -)
    1. The white part of an egg; being mostly the protein albumin and water.
    alpine Tweet Definition of alpine Like Definition of alpine on Facebook
    adjective
    1. Of or pertaining to the Alps, or to any lofty mountain; as, Alpine snows; Alpine plants.
    2. Like the Alps; lofty. ``Gazing up an Alpine height.'' --Tennyson.
    amendment Tweet Definition of amendment Like Definition of amendment on Facebook
    noun
    1. An alteration or change for the better; correction of a fault or of faults; reformation of life by quitting vices.
    2. In public bodies; Any alteration made or proposed to be made in a bill or motion that adds, changes, substitutes, or omits.
    3. Correction of an error in a writ or process.
    4. An addition to and/or alteration of the United States Constitution, as in "The First Amendment guarantees the right of free speech."
    5. That which is added; that which is used to increase or supplement something.
    a soil
    anandrous Tweet Definition of anandrous Like Definition of anandrous on Facebook
    adjective
    1. lacking stamens; devoid of male parts in plants
    androgyne Tweet Definition of androgyne Like Definition of androgyne on Facebook
    noun
    1. A person who is androgynous.
    androgynous Tweet Definition of androgynous Like Definition of androgynous on Facebook
    adjective
    1. Pertaining to a characteristic that is not definitively male or female.
    Names like Terry, Pat, and Jean are because they can be given to both men and women.
    1. A condition in which gender is unknown, ambivalent, indeterminate, or neuter.
    2. Possessing qualities of both sexes.
    3. Possessing both male and female sex organs.
    angiosperm Tweet Definition of angiosperm Like Definition of angiosperm on Facebook
    noun
    1. (botany) A member of the plant group characterized by having ovules enclosed in an ovary; the angiosperms or flowering plants: the Angiospermae, Magnoliophyta, Magnoliopsida, etc.
    adjective
    1. (botany) pertaining to the angiosperms.
    anisotropic Tweet Definition of anisotropic Like Definition of anisotropic on Facebook
    adjective
    1. (physics) Having properties that differ according to the direction of measurement; exhibiting anisotropy.
    The crystal has an structure, as it is stronger along its length than laterally.
    annual Tweet Definition of annual Like Definition of annual on Facebook
    noun
    1. something that is published once a year
    adjective
    1. happening once every year.
    The meeting will be held on ...
    anther Tweet Definition of anther Like Definition of anther on Facebook
    noun
    1. (botany) The pollen-bearing part of the stamen of a flower.
    apetalous Tweet Definition of apetalous Like Definition of apetalous on Facebook
    adjective
    1. Having no petals.
    aphyllous Tweet Definition of aphyllous Like Definition of aphyllous on Facebook
    adjective
    1. (botany) Having no leaves.
    appendage Tweet Definition of appendage Like Definition of appendage on Facebook
    noun
    1. an external body part that projects from the body
    2. a natural prolongation or projection from a part of any organism
    3. a part that is joined to something larger
    arboreal Tweet Definition of arboreal Like Definition of arboreal on Facebook
    adjective
    1. of, relating to, or resembling a tree
    arboriculture Tweet Definition of arboriculture Like Definition of arboriculture on Facebook
    noun
    1. The branch of horticulture concerned with the planting and growth of trees
    aril Tweet Definition of aril Like Definition of aril on Facebook
    noun
    1. A tissue surrounding the seed in certain fruits.
    ascending Tweet Definition of ascending Like Definition of ascending on Facebook
    verb
    1. (present participle of, ascend)
    assimilation Tweet Definition of assimilation Like Definition of assimilation on Facebook
    noun
    1. The act of assimilating or the state of being assimilated.
    2. The metabolic conversion of nutriments into tissue.
    3. (context, by extension) The absorption of new ideas into an existing cognitive structure.
    4. (linguistics) The modification of a sound such that it becomes similar to an adjacent sound.
    5. The adoption, by a minority group, of the customs and attitudes of the dominant culture.
    assurgent Tweet Definition of assurgent Like Definition of assurgent on Facebook
    noun
    1. (heraldry) A man or beast rising out of the sea.
    attenuate Tweet Definition of attenuate Like Definition of attenuate on Facebook
    verb (attenuat, ing)
    1. (transitive) To reduce in size, force, value, amount, or degree
    2. (transitive) To weaken
    3. (transitive) To rarefy
    4. (transitive) To reduce the virulence of a bacteria or virus
    5. (transitive) (electronics) To reduce the amplitude of an electrical signal
    adjective
    1. (botany, of leaves) Gradually tapering into a petiole-like extension toward the base.
    autogamy Tweet Definition of autogamy Like Definition of autogamy on Facebook
    noun
    1. Self-fertilize, fertilization, the fertilizing pollen being derived from the same blossom as the pistil acted upon.
    avenaceous Tweet Definition of avenaceous Like Definition of avenaceous on Facebook
    adjective
    1. Belonging to, or resembling, oats or the oat grasses.
    axil Tweet Definition of axil Like Definition of axil on Facebook
    noun
    1. The angle or point of divergence between the upper side of a branch, leaf, or petiole, and the stem or branch from which it springs.
    axilla Tweet Definition of axilla Like Definition of axilla on Facebook
    noun (plural:axillae)
    1. The armpit, or the cavity beneath the junction of the arm and shoulder.
    2. The angle or point of divergence between the upper side of a branch, leaf, or petiole, and the stem or branch from which it springs.
    axillary Tweet Definition of axillary Like Definition of axillary on Facebook
    adjective
    1. Of or pertaining to the axilla or armpit; as, axillary gland, artery, nerve.
    2. Situated in, or rising from, an axil; of or pertaining to an axil.
    Axis Tweet Definition of Axis Like Definition of Axis on Facebook
    proper nounthe Axis
    1. The alliance group before and during World War II consisting of Germany, Italy, Japan, and allied countries.

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