/ Dictionary / Index H Hiiumaa: Meaning and Definition of Find definitions for: Hii•u•maa Pronunciation: (hē'-mä"), [key] — n. an island in the Baltic, W of and belonging to Estonia. 373 sq. mi. (965 sq. km). Danish, Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. H.I.H. hijack Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language