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adsorption the condensation or adhesion of a gas, vapor, liquid, or dissolved substance on the surface of a solid or liquid. (Cf. absorption.)
adulate to flatter or admire excessively.
adulation extreme or excessive praise.
adult having grown to maturity. [6 definitions]
adulterant something that, when added to a substance, makes the substance impure or inferior. [2 definitions]
adulterate to make worse or impure by adding unnecessary or inferior ingredients. [3 definitions]
adulteration the act or process of adulterating, or making worse or impure by adding unnecessary or inferior ingredients. [3 definitions]
adulterer one, esp. a man, who commits adultery.
adulteress a woman who commits adultery.
adulterous pertaining to, in the nature of, characterized by, or inclined toward adultery.
adultery willing sexual intercourse between a married person and another who is not his or her spouse.
adulthood the part of life when a person is grown up; the adult years.
adumbrate to give an indistinct or sketchy outline of. [2 definitions]
adv. abbreviation of "adverb," in grammar, a word that modifies a verb, adjective, or other adverb or adverbial phrase.
ad valorem of various taxes or customs duties, levied in proportion to the value of goods.
advance to move or send forward. [13 definitions]
advanced in a highly developed state. [2 definitions]
advance man an agent or aide who takes care of publicity, security, and other arrangements in advance of the appearance of a politician, theater group, or the like.
advancement the act, process, or result of moving forward; progress. [2 definitions]
advantage a position or place of superiority or domination. [3 definitions]
advantageous offering benefit, gain, or profit.