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word-forming element meaning "under, beneath" (in chemistry, indicating a lesser oxidation), from hypo-, comb. form of Greek hypo (prep. and adverb) "under," from PIE *upo- "under, up from under, over" (see sub-).
hypo hy·po (hī'pō)
A hypodermic syringe.
A hypodermic injection.
hypo- or hyp-
Below; beneath; under: hypochondriac.
Less than normal; deficient: hypofunction.
In the lowest state of oxidation: hypoxanthine.
|hypo- or hyp- |
A prefix that means "beneath" or "below," as in hypodermic, below the skin. It also means "less than normal," especially in medical terms like hypoglycemia. In the names of chemical compounds, it means "at the lowest state of oxidation," as in sodium hypochlorite.