/ Dictionary / Index S sessile: Meaning and Definition of Find definitions for: ses•sile Pronunciation: (ses'il, -īl), [key] — adj. attached by the base, or without any distinct projecting support, as a leaf issuing directly from the stem. permanently attached; not freely moving. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sessile (Thesaurus) Sesshu session Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language