Botany. attached by the base, or without any distinct projecting support, as a leaf issuing directly from the stem.
Zoology. permanently attached; not freely moving.
- ses·sil·i·ty [se-sil-i-tee], /sɛˈsɪl ɪ ti/, noun
- pseu·do·ses·sile, adjective
- sub·ses·sile, adjective
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.
It grows to a height of eighteen inches or two feet, bearing silvery oval lanceolate leaves and sessile fruit.
The leaves are sessile and pinnatifid, with very narrow segments, and the white flowers grow in solitary heads.
The umbels are sessile or nearly so, the flowers have no calyx, and the fruit has five prominent ridges.
British Dictionary definitions for sessile
(of flowers or leaves) having no stalk; growing directly from the stem
(of animals such as the barnacle) permanently attached to a substratum
- 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
Permanently attached or fixed and not free-moving, as corals and mussels.
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.