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a. [ L. aggregatus, p. p. ] 1. Formed by a collection of particulars into a whole mass or sum; collective. [ 1913 Webster ]

The aggregate testimony of many hundreds. Sir T. Browne. [ 1913 Webster ]

2. (Anat.) Formed into clusters or groups of lobules; as, aggregate glands. [ 1913 Webster ]

3. (Bot.) Composed of several florets within a common involucre, as in the daisy; or of several carpels formed from one flower, as in the raspberry. [ 1913 Webster ]

4. (Min. & Geol.) Having the several component parts adherent to each other only to such a degree as to be separable by mechanical means. [ 1913 Webster ]

5. (Zool.) United into a common organized mass; -- said of certain compound animals. [ 1913 Webster ]

Corporation aggregate. (Law) See under Corporation. [ 1913 Webster ]

n. 1. A mass, assemblage, or sum of particulars; as, a house is an aggregate of stone, brick, timber, etc. [ 1913 Webster ]

☞ In an aggregate the particulars are less intimately mixed than in a compound. [ 1913 Webster ]

2. (Physics) A mass formed by the union of homogeneous particles; -- in distinction from a compound, formed by the union of heterogeneous particles. [ 1913 Webster ]

In the aggregate, collectively; together. [ 1913 Webster ]

adv. Collectively; in mass. [ 1913 Webster ]

n. [ Cf. LL. aggregatio, F. agrégation. ] The act of aggregating, or the state of being aggregated; collection into a mass or sum; a collection of particulars; an aggregate. [ 1913 Webster ]

Each genus is made up by aggregation of species. Carpenter. [ 1913 Webster ]

A nation is not an idea only of local extent and individual momentary aggregation, but . . . of continuity, which extends in time as well as in numbers, and in space. Burke. [ 1913 Webster ]

a. [ Cf. Fr. agrégatif. ] 1. Taken together; collective. [ 1913 Webster ]

2. Gregarious; social. [ R. ] Carlyle. [ 1913 Webster ]

3. tending to gather into a mass. [ WordNet 1.5 ]

n. One who aggregates. [ 1913 Webster ]

v. t. [ OF. agreger. See Aggravate. ] To make heavy; to aggravate. [ Obs. ] Chaucer. [ 1913 Webster ]

v. i. [ imp. & p. p. Aggressed p. pr. & vb. n. Aggressing. ] [ L. aggressus, p. p. of aggredi to go to, approach; ad + gradi to step, go, gradus step: cf. OF. aggresser. See Grade. ] To commit the first act of hostility or offense; to begin a quarrel or controversy; to make an attack; -- with on. [ 1913 Webster ]

2. take the initiative and go on the offensive, as in a game.
Syn. -- attack [ WordNet 1.5 ]

v. t. To set upon; to attack. [ R. ] [ 1913 Webster ]

n. [ L. aggressus. ] Aggression. [ Obs. ] [ 1913 Webster ]

Their military aggresses on others. Sir M. Hale. [ 1913 Webster ]

n. [ L. aggressio, fr. aggredi: cf. F. agression. ] The first attack, or act of hostility; the first act of injury, or first act leading to a war or a controversy; unprovoked attack; assault; as, a war of aggression. “Aggressions of power.” Hallam [ 1913 Webster ]

Syn. -- Attack; offense; intrusion; provocation. [ 1913 Webster ]

a. [ Cf. F. agressif. ] 1. Tending or disposed to aggress; having or showing determination and energetic pursuit of one's own ends at the expense of others or mindless of others' needs or desires; characterized by aggression; making assaults; unjustly attacking; as, an aggressive policy, war, person, nation; an aggressive businessman; an aggressive basketball player; he was aggressive and imperious in his convictions; aggressive drivers. Opposite of unaggressive. [ 1913 Webster + WordNet 1.5 ]

No aggressive movement was made. Macaulay. [ 1913 Webster ]

2. Marked by self-confident ambition, vigorous competitiveness, energy and initiative; as, an aggressive young executive.
Syn. -- enterprising, pushful, pushing, pushy [ WordNet 1.5 ]

3. (Med., Biol.) Tending to grow or spread quickly; as, an aggressive tumor. [ Narrower terms: invasive (vs. noninvasive) ] AS
Syn. -- fast-growing(prenominal) [ WordNet 1.5 ]

4. Tending to initiate unprovoked attacks; initiating unprovoked military action; eager to fight; as, aggressive acts against another country.
Syn. -- belligerent. [ WordNet 1.5 ]

Narrower related terms: bellicose, combative, pugnacious, scrappy, truculent ; hard-hitting, high-pressure ; hostile (used of attempts to buy or take control of a business: "hostile takeover"; "hostile tender offer"); predatory, rapacious, raptorial, ravening, vulturine, vulturous . See also: assertive, hostile, offensive. [ WordNet 1.5 ]

-- Ag*gres"sive*ly, adv. -- Ag*gres"sive*ness, n. [ 1913 Webster ]

n. [ L.: cf. F. agresseur. ] The person who first attacks or makes an aggression; he who begins hostility or a quarrel; an assailant. [ 1913 Webster ]

The insolence of the aggressor is usually proportioned to the tameness of the sufferer. Ames. [ 1913 Webster ]

v. t. To destroy the aggregation of; to separate into component parts, as an aggregate mass. [ 1913 Webster ]