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sessile

Pronunciation: /ˈsɛsʌɪl, ˈsɛsɪl/

Definition of sessile

adjective

Biology

(of an organism, e.g. a barnacle) fixed in one place; immobile: parrotfish inadvertently graze upon sessile invertebrates when cropping algae overall body shape is consistent with a sessile habit
Botany & Zoology (of a plant or animal structure) attached directly by its base without a stalk or peduncle: sporangia may be stalked or sessile