Webster's Revised Unabridged Dictionary · 1913

Heterosis

Heterosis , noun

[New Latin, from Greek {not transcribed} alteration, from {not transcribed} other, different.]

(Rhetoric) A figure of speech by which one form of a noun, verb, or pronoun, and the like, is used for another, as in the sentence: “What is life to such as me?” — Aytoun