/ Dictionary / Index I innateness hypothesis: Meaning and Definition of Find definitions for: innate'ness hypoth"esis Pronunciation: [key] — Psycholinguistics. Psycholinguistics. the theory that humans are biologically equipped with a knowledge of certain universal elements of language structure that is brought into play in the course of native-language acquisition. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. innate inner Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language