sessile
Rooted in place
Sessile describes organisms that are permanently attached to a surface rather than free-moving.
Barnacles are sessile, fixed to rocks or ship hulls.
Oysters are sessile after their brief larval stage.
In botany, sessile describes leaves or flowers that attach directly to a stem without a stalk: sessile oak leaves grow flush against the branch.
Not in motion
- anchoredFixed securely in position
- fixedRestored or immovable
- immobileUnable to shift
- attachedJoined to another thing
nonmotile · rooted · permanent · encrustation · biofilm · colony · organism · invertebrate
stationary
Not in motion
attached · nonmotile · rooted · permanent · encrustation · biofilm · colony · organism · invertebrate · larva
barnacle
Sessile marine crustacean
oyster · sponge · tunicate · polyp · hydroid · bryozoan · sea squirt · limpet · hydra · encrusting
epiphyte
Non-parasitic botanical hitchhiker
seaweed · kelp · leaf · flower · whorl · node · stalkless · stemless · rosette · basal
sessilemotile
Able to move independently
mobile · free-swimming · ambulatory · locomotive · migratory
- jam sessionInformal improvisational music gathering
- first sessionOpening instance of recurring event
- cram sessionRushed intensive study period
- study sessionScheduled time for learning
- training sessionOrganized period of instruction
- therapy sessionScheduled psychological treatment meeting