/ Dictionary / Index H hypo: Meaning and Definition of Find definitions for: hy•po Pronunciation: (hī'pō), [key] — n., pl. v. -pos, —n. a hypodermic syringe or injection. a stimulus or boost. —v.t. to administer a hypodermic injection to. to stimulate by or as if by administering a hypodermic injection. to increase, boost, or augment: to hypo the car's power by installing a bigger engine. hy•po Pronunciation: (hī'pō), [key] — n. See hy•po Pronunciation: (hī'pō), [key] — n. Archaic. hypochondria. hypo- Pronunciation: [key] a prefix appearing in loanwords from Greek, where it meant “under” (hypostasis); on this model used, especially as opposed toin the formation of compound words (hypothyroid). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hypo (Thesaurus) hypnotize hypoacidity Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language