/ Dictionary / Index H humidity: Meaning and Definition of Find definitions for: hu•mid•i•ty Pronunciation: (hy-mid'i-tē or, often, y-), [key] — n. humid condition; moistness; dampness. See an uncomfortably high amount of relative humidity: It's not the heat, it's the humidity that tires me out. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: humidity (Thesaurus) humidistat humidor 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