from
WordNet (r) 3.0 (2006)
sessile
adj 1: permanently attached to a substrate; not free to move
about; "sessile marine animals and plants" [ant:
{vagile}]
2: attached directly by the base; not having an intervening
stalk; "sessile flowers"; "the shell of a sessile barnacle is
attached directly to a substrate" [syn: {sessile},
{stalkless}] [ant: {pedunculate}, {stalked}]
from
The Collaborative International Dictionary of English v.0.48
Sessile \Ses"sile\, a. [L. sessilis low, dwarf, from sedere,
sessum, to sit: cf. F. sessile.]
1. Attached without any sensible projecting support.
[1913 Webster]
2. (Bot.) Resting directly upon the main stem or branch,
without a petiole or footstalk; as, a sessile leaf or
blossom.
[1913 Webster]
3. (Zool.) Permanently attached; -- said of the gonophores of
certain hydroids which never became detached.
[1913 Webster]