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Acquaint

To furnish or give experimental knowledge of; to make (one) to know; to make familiar; -- followed by with.

Acquaintance

A state of being acquainted, or of having intimate, or more than slight or superficial, knowledge; personal knowledge gained by intercourse short of that of friendship or intimacy; as, I know the man; but have no acquaintance with him.

Acquainted

Personally known; familiar. See To be acquainted with, under Acquaint, v. t.

Acquiesce

To rest satisfied, or apparently satisfied, or to rest without opposition and discontent (usually implying previous opposition or discontent); to accept or consent by silence or by omitting to object; -- followed by in, formerly also by with and to.

Acquiescent

Resting satisfied or submissive; disposed tacitly to submit; assentive; as, an acquiescent policy.

Acquire

To gain, usually by one's own exertions; to get as one's own; as, to acquire a title, riches, knowledge, skill, good or bad habits.

acquired

gotten through environmental forces. Contrasted with inherited.

Acquirement

The act of acquiring, or that which is acquired; attainment.

Acquisitiveness

The quality of being acquisitive; propensity to acquire property; desire of possession.

Acquit

To discharge, as a claim or debt; to clear off; to pay off; to requite.

Acquittal

The act of acquitting; discharge from debt or obligation; acquittance.

Acrania

Partial or total absence of the skull.

Acraspeda

A group of acalephs, including most of the larger jellyfishes; the Discophora.

Acre

Any field of arable or pasture land.

Acreable

Of an acre; per acre; as, the acreable produce.

Acreage

Acres collectively; as, the acreage of a farm or a country.

Acred

Possessing acres or landed property; -- used in composition; as, large-acred men.

Acrid

Sharp and harsh, or bitter and not, to the taste; pungent; as, acrid salts.

Acridness Acridity

The quality of being acrid or pungent; irritant bitterness; extreme bitterness; acrimony; as, the acridity of a plant, of a speech.

Acrilan

a strong soft crease-resistant fabric.

Acrimony

A quality of bodies which corrodes or destroys others; also, a harsh or biting sharpness; as, the acrimony of the juices of certain plants.

Acrita

The lowest groups of animals, in which no nervous system has been observed.

Acritan

Of or pertaining to the Acrita. An individual of the Acrita.

Acritical

Having no crisis; giving no indications of a crisis; as, acritical symptoms, an acritical abscess.

Acritude

Acridity; pungency joined with heat.

Acroamatical Acroamatic

Communicated orally; oral; -- applied to the esoteric teachings of Aristotle, those intended for his genuine disciples, in distinction from his exoteric doctrines, which were adapted to outsiders or the public generally. Hence: Abstruse; profound.

Acrobat

One who practices rope dancing, high vaulting, or other daring gymnastic feats.

Acrobatism

Feats of the acrobat; daring gymnastic feats; high vaulting.

Acrocarpous

Having a terminal fructification; having the fruit at the end of the stalk. Having the fruit stalks at the end of a leafy stem, as in certain mosses.

Acroceraunian

Of or pertaining to the high mountain range of /thunder-smitten/ peaks (now Kimara), between Epirus and Macedonia.

Acroclinium

a genus of herbs and shrubs of Australia and Southern Africa, with an everlasting flower; most species are usually placed in genus Helipterum.

Acrocomia

a genus of Central and South American feather palms.

Acrodont

One of a group of lizards having the teeth immovably united to the top of the alveolar ridge. Of or pertaining to the acrodonts.

Acrogen

A plant of the highest class of cryptogams, including the ferns, etc. See Cryptogamia.

acrogenic

pertaining to acrogens, flowerless plants (ferns or mosses) in which growth occurs only at the tip of the main stem.

Acrogenous

Increasing by growth from the extremity; as, an acrogenous plant.

Acrolein

A limpid, colorless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating.

Acrolith

A statue whose extremities are of stone, the trunk being generally of wood.

Acromegaly

Chronic enlargement of many bones of the skeleton, especially bones of hands, feet and face; the condition is due to excessive secretion of growth hormone.

Acromial

Of or pertaining to the acromion.

Acromion

The outer extremity of the shoulder blade.

Acromonogrammatic

Having each verse begin with the same letter as that with which the preceding verse ends.

Acronycally

In an acronycal manner as rising at the setting of the sun, and vice versa.

Acronychal Acronyc

Rising at sunset and setting at sunrise, as a star; -- opposed to cosmical.

Acropetal

Developing from below towards the apex, or from the circumference towards the center; centripetal; -- said of certain inflorescence.

Acrophony

The use of a picture symbol of an object to represent phonetically the initial sound of the name of the object.

Acropolis

The upper part, or the citadel, of a Grecian city; especially, the citadel of Athens.

Acrospore

A spore borne at the extremity of the cells of fructification in fungi.

Across

From side to side; crosswise; as, with arms folded across.

Acrostic

A composition, usually in verse, in which the first or the last letters of the lines, or certain other letters, taken in order, form a name, word, phrase, or motto.

Acroteleutic

The end of a verse or psalm, or something added thereto, to be sung by the people, by way of a response.

Acroterial

Pertaining to an acroterium; as, acroterial ornaments.

Acroterium

One of the small pedestals, for statues or other ornaments, placed on the apex and at the basal angles of a pediment. Acroteria are also sometimes placed upon the gables in Gothic architecture. One of the pedestals, for vases or statues, forming a part roof balustrade.

acrotic

Pertaining to or affecting the surface of the body.

Acrotomous

Having a cleavage parallel with the base.

acrylic

Of or containing acryl, the hypothetical radical (R.CH:CH.CO-) of which acrolein (H2C:CH.CHO) is the hydride; as, acrylic acid. The characteristic residue in an acrylic compound is the carbonyl group attached directly to an ethylenic carbon.

Acrylic

A paint in which the pigment is suspended in a solution of an acrylic resin, which dries to a hard film on exposure to air.

Acrylic resin

a thermoplastic made by polymerization of acrylic acid or methacrylic acid or some derivative of these (such as the esters or amides). It can be formed into a clear hard plastic, and is the basis for the commercial plastics called Lucite and Plexiglass.

acrylonitrile

a colorless liquid compound (H2C:CH.CN); used as raw material for acrylic fibers, and as a solvent.

Act

To exert power; to produce an effect; as, the stomach acts upon food.

ACTH

a growth hormone produced by the anterior pituitary gland; stimulates the adrenal cortex.

Actinal

Pertaining to the part of a radiate animal which contains the mouth.

Actinaria

An order of Anthozoa, including those which have simple tentacles and do not form stony corals. Sometimes, in a wider sense, applied to all the Anthozoa, expert the Alcyonaria, whether forming corals or not.

Actinia

An animal of the class Anthozoa, and family Actinid/. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See Polyp.]. A genus in the family Actinid/.

actinian

any sea anemone or related animal.

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