Definition of sessile in English:

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Pronunciation: /ˈsɛsʌɪl/


1 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
More example sentences
  • Epizoic barnacles are sessile, marine crustaceans and constitute a model system featuring the above conditions.
  • Most radially symmetric animals are sessile, however, echinoderms are able to move.
  • Because anemones are sessile animals, staying put most of their lives, it is important for them to maintain dominance over their territory in competition for food and space.
1.1 Botany & Zoology (Of a plant or animal structure) attached directly by its base without a stalk or peduncle: sporangia may be stalked or sessile
More example sentences
  • It continues to grow with a dome shape, but it can be sessile or pedunculated.
  • It frequently occurs in the lower uterine segment and may be either sessile or pedunculated.
  • These two phenomena are especially critical for sessile higher plants.


Early 18th century: from Latin sessilis, from sess- 'seated', from the verb sedere.

For editors and proofreaders

Line breaks: ses|sile

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