sessile

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sessile

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From Latin sessilis (“sitting”), from sessus, perfect passive participle of verb sedeō (“to sit”), + adjective suffix -ilis. Compare session.

• IPA^(key): /ˈsɛsaɪl/, /ˈsɛsɪl/

• Audio (Southern England):

  (file)

sessile (not comparable)

1. (zoology) Permanently attached to a substrate; not free to move about.

   Synonyms: attached, fixed, immobile; see also Thesaurus:immobile

   Antonyms: mobile, motile, vagile; see also Thesaurus:movable

   a sessile oyster

2. (botany, oncology) Attached directly by the base; not having an intervening stalk; stalkless.
   • 1903, George Francis Atkinson, chapter VII, in Studies of American Fungi. Mushrooms, Edible, Poisonous, etc.‎^[1], 2nd edition, New York: Henry Holt:

     The pileus is sessile, or sometimes narrowed at the base into a short stem, the caps often numerous and crowded together in an overlapping or imbricate manner.

   • 1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, Chicago, Ill.: Field Museum of Natural History, →ISBN, page 5:

     The sporophyte foot is also characteristic: it is very broad and more or less lenticular or disciform, as broad or broader than the calyptra stalk […] , and is sessile on the calyptra base […]

• crustose

• lessies

From Latin sessilis.

• IPA^(key): /ˈsɛs.si.le/
• Rhymes: -ɛssile
• Hyphenation: sès‧si‧le

sessile (plural sessili)

1. (botany, zoology) sessile

sessile

1. nominative/accusative/vocative neuter singular of sessilis