ˈsesəl, -eˌsīl, -e(ˌ)sil adjective
Etymology: Latin sessilis of or fit for sitting, low, dwarf (of plants), from sessus (past participle of sedēre to sit) + -ilis -ile — more at sit
1.
a. : attached directly by the base : not raised upon a peduncle
sessile bubble
sessile -eyed
specifically : resting on a main stem or branch without an intervening stalk
sessile -fruited
sessile -leaved
b. : attached by a broad base
sessile polyp
2. : permanently attached : not free to move about : sedentary
sessile marine animals and plants — R.E.Coker
sessile employment
sessile population units
sessile and vulnerable wealth — C.D.Forde
— compare vagile