/ Dictionary / Index S situationism: Meaning and Definition of Find definitions for: sit•u•a•tion•ism Pronunciation: (sich"-ā'shu-niz"um), [key] — n. Psychol. the theory that behavior is chiefly response to immediate situations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. situation ethics situation room 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