adjoint noun & adjective. ['adʒɔɪnt; in sense A.2 also adʒw, pl. same] L16.
[French, pa. pple of adjoindre: see ADJOIN, ADJUNCT.]
A. adjective.
1. A helper; an adjunct. L16-E18.

2. A French civil officer who assists the mayor. Also, an assistant professor in a French college. M19.

3. Math. An adjoint matrix, function, etc. L19.
b. adjective. Math. Of a function, quantity, etc.: related to a given function, quantity, etc., by a particular process of transposition; gen. designating or pertaining to such a relationship; spec. (of a matrix) being the transpose of the cofactors of a given square matrix. L19.

► In sense A.2 often italicized.

[TahlilGaran] English Dictionary ▲