[ad. late L. combīnānt-em, pr. pple. of combīnāre to COMBINE.]
† 1. One who combines, a confederate. Obs.
1628. A. Leighton, Appeal to Parl., in Chandler, Hist. Persec. (1736), 369. The said Doctor and his Combinants caused the said Censure to be executed.
2. Math. (See quots.)
1853. Sylvester, in Camb. & Dublin Math. Jrnl., VIII. 257. What I term a combinant.
1885. Salmon, Higher Algebra, 161. An invariant of a system of quantics of the same degree is called a combinant if it is unaltered (except by a constant multiplier) not only when the variables are linearly transformed, but also when for any of the quantics is substituted a linear function of the quantics.
Hence Combinantive, pertaining to, or of the nature of, a combinant.
1853. Sylvester, in Camb. & Dublin Math. Jrnl., VIII. 257. Any combinantive concomitant will be a function of the full determinants of the matrix formed by the coefficients of the given system of forms and of the variables.
1885. Salmon, Higher Algebra, 161. There may be in like manner combinantive covariants, which are equally covariants when for any of the quantics is substituted a linear function of them.
