sessile

[ ses-il, -ahyl ]

adjective
  1. Botany. attached by the base, or without any distinct projecting support, as a leaf issuing directly from the stem.

  2. Zoology. permanently attached; not freely moving.

Origin of sessile

1
1715–25; <Latin sessilis fit for sitting on, low enough to sit on, dwarfish (said of plants), equivalent to sess(us) (past participle of sedēre to sit1) + -ilis-ile

Other words from sessile

  • ses·sil·i·ty [se-sil-i-tee], /sɛˈsɪl ɪ ti/, noun
  • pseu·do·ses·sile, adjective
  • sub·ses·sile, adjective

Words Nearby sessile

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use sessile in a sentence

  • Amphipods, am′fi-pods, n. an order of small sessile-eyed crustaceans—a familiar example is the sand-hopper.

  • The spores are arranged in beaded threads in sessile conceptacles on the marginal leaflets.

    The Sea Shore | William S. Furneaux
  • It grows to a height of eighteen inches or two feet, bearing silvery oval lanceolate leaves and sessile fruit.

    The Sea Shore | William S. Furneaux
  • The leaves are sessile and pinnatifid, with very narrow segments, and the white flowers grow in solitary heads.

    The Sea Shore | William S. Furneaux
  • The umbels are sessile or nearly so, the flowers have no calyx, and the fruit has five prominent ridges.

    The Sea Shore | William S. Furneaux

British Dictionary definitions for sessile

sessile

/ (ˈsɛsaɪl) /


adjective
  1. (of flowers or leaves) having no stalk; growing directly from the stem

  2. (of animals such as the barnacle) permanently attached to a substratum

Origin of sessile

1
C18: from Latin sēssilis concerning sitting, from sedēre to sit

Derived forms of sessile

  • sessility (sɛˈsɪlɪtɪ), noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for sessile

sessile

[ sĕsīl′ ]


  1. Permanently attached or fixed and not free-moving, as corals and mussels.

  2. Stalkless and attached directly at the base, as certain kinds of leaves and fruit.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.