Ses"sile (?), a. [L. sessilis low, dwarf, from sedere, sessum, to sit: cf. F. sessile.]
1.
Attached without any sensible projecting support.
2. Bot.
Resting directly upon the main stem or branch, without a petiole or footstalk; as, a sessile leaf or blossom.
3. Zool.
Permanently attached; -- said of the gonophores of certain hydroids which never became detached.
© Webster 1913.