/ Dictionary / Index S semih.: Meaning and Definition of Find definitions for: semih. Pronunciation: [key] (in prescriptions) half an hour. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. semigroup semihardy Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language