/ Dictionary / Index H hygroscopic: Meaning and Definition of Find definitions for: hy•gro•scop•ic Pronunciation: (hī"gru-skop'ik), [key] — adj. absorbing or attracting moisture from the air. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hygroscopic (Thesaurus) hygroscope hygrothermograph Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language