/ Dictionary / Index I intermediate host: Meaning and Definition of Find definitions for: in'terme'diate host' Pronunciation: [key] — Biol. Biol. the host in which a parasite undergoes development but does not reach sexual maturity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. intermediate frequency intermediate range ballistic missile Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language