Webster’s Revised Unabridged Dictionary · 1913
Variant
Va′ri·ant (·ant), a. [L. varians, p. pr. of variare to change: cf. F. variant. See Vary.]
1. Varying in from, character, or the like; variable; different; diverse.
2. Changeable; changing; fickle. [Obs.]
He is variant, he abit [abides] nowhere. Chaucer.
Va′ri·ant (vā′rĭ·ant), n. [Cf. F. variante.] Something which differs in form from another thing, though really the same; as, a variant from a type in natural history; a variant of a story or a word.