Webster’s Revised Unabridged Dictionary · 1913
Integrant
In′te·grant (·grant), a. [L. integrans, -antis, p. pr. of integrare to make whole, renew: cf. F. intégrant. 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 particles, of bodies, those smaller particles into which a body may be reduced without loss of its original constitution, as by mechanical division.