- Attached without any sensible projecting support. - Resting directly upon the main stem or branch, without a
petiole or footstalk; as, a sessile leaf or blossom. - Permanently attached; -- said of the gonophores of certain
hydroids which never became detached.
Meaning of 'sessile' (Princeton's WordNet)
1 . sessile
[ a]
Meaning (1): - attached directly by the base; not having an intervening stalk
Example in sentence:
sessile flowers;
the shell of a sessile barnacle is attached directly to a substrate
Meaning (2): - permanently attached to a substrate; not free to move about