sessile
1. [ adjective ] (biology) permanently attached to a substrate; not free to move about
Synonyms: attached
Examples:

"an attached oyster" "sessile marine animals and plants"

Related terms: vagile biology
2. [ adjective ] (biology) attached directly by the base; not having an intervening stalk
Synonyms: stalkless
Examples:

"sessile flowers" "the shell of a sessile barnacle is attached directly to a substrate"

Related terms: pedunculate biology
Similar spelling:   Seseli
  Secale
  Seagle
  seashell