sessile
Concise Oxford English Dictionary © 2008 Oxford University Press:
sessile /ˈsɛsʌɪl, ˈsɛsɪl/
▶adjective Biology
- 1 (of an organism) fixed in one place; immobile.
- 2 (of a structure) attached directly by its base without a stalk or peduncle.
– origin C18: from L. sessilis, from sess-, sedere ‘sit’.
'sessile' also found in these Oxford entries:

