/ Dictionary / Index S semidetached: Meaning and Definition of Find definitions for: sem•i•de•tached Pronunciation: (sem"ē-di-tacht', sem"ī-), [key] — adj. partly detached. of or pertaining to a house joined by a party wall to another house or row of houses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: semidetached (Thesaurus) semidesert semidiameter Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language