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determinant

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Determinant \De*ter"mi*nant\, adjective [L. determinans, p. pr. of determinare: cf. F. d['e]terminant.] Serving to determine or limit; determinative.

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Determinant \De*ter"mi*nant\, noun

1. That which serves to determine; that which causes determination.

2. (Math.) The sum of a series of products of several numbers, these products being formed according to certain specified laws;

Note: thus, the determinant of the nine numbers a, b, c,a', b', c',a'', b'', c'', is a b' c'' - a b'' c' + a' b'' c] - a' b c'' + a'' b' c. The determinant is written by placing the numbers from which it is formed in a square between two vertical lines. The theory of determinants forms a very important branch of modern mathematics.

3. (Logic) A mark or attribute, attached to the subject or predicate, narrowing the extent of both, but rendering them more definite and precise. --Abp. Thomson.

From WordNet (r) 3.0 (2006) [wn]:

1: having the power or quality of deciding; "the crucial experiment"; "cast the deciding vote"; "the determinative (or determinant) battle" [syn: {deciding(a)}, {determinant}, {determinative}, {determining(a)}]

noun

1: a determining or causal element or factor; "education is an important determinant of one's outlook on life" [syn: {determinant}, {determiner}, {determinative}, {determining factor}, {causal factor}]

2: the site on the surface of an antigen molecule to which an antibody attaches itself [syn: {antigenic determinant}, {determinant}, {epitope}]