/ Dictionary / Index S seising: Meaning and Definition of Find definitions for: seis•ing Pronunciation: (sē'zing), [key] — n. Chiefly Law. seizing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seisin seism Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language