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English definition of “sessile”

sessile

adjective [not gradable]  /ˈses·ɑɪl, -əl/ biology
describes a leaf or flower that has no stem of its own but is attached directly to the main stem of the plant Sessile also describes animals that are permanently attached to one spot and cannot move around: sessile sponges
(Definition of sessile adjective from the Cambridge Academic Content Dictionary © Cambridge University Press)

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