a. 构成整体的, 组成的, 不可分割的

n. 构成要素

Integrant \In"te*grant\, a. [L. integrans, -antis, p. pr. of
integrare to make whole, renew: cf. F. int['e]grant. See
{Integrate}.]
Making part of a whole; necessary to constitute an entire
thing; integral. --Boyle.

All these are integrant parts of the republic. --Burke.

{Integrant parts}, or {Integrant particles}, of bodies, those
smaller particles into which a body may be reduced without
loss of its original constitution, as by mechanical
division.