/ Dictionary / Index S sensillum: Meaning and Definition of Find definitions for: sen•sil•lum Pronunciation: (sen-sil'um), [key] — pl. -la a simple sense organ usually consisting of one or a few cells at the peripheral end of a sensory nerve fiber. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sensible horizon sensitive 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