/ Dictionary / Index H hygiene: Meaning and Definition of Find definitions for: hy•giene Pronunciation: (hī'jēn), [key] — n. the science that deals with the preservation of health. a condition or practice conducive to the preservation of health, as cleanliness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hygiene (Thesaurus) Hygieia hygienic Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language