American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Botany Stalkless and attached directly at the base: sessile leaves.
- adj. Zoology Permanently attached or fixed; not free-moving: a sessile barnacle.
Century Dictionary and Cyclopedia
- In botany, attached without any sensible projecting support; sitting directly on the body to which it belongs without a support; attached by the base: as, a sessile leaf, one issuing directly from the main stem or branch without a petiole or footstalk; a sessile flower, one having no peduncle; a sessile stigma, one without a style, as in the poppy.
- In zoöl. and anatomy:
- Seated flat or low; fixed by a broad base; not stalked or pedunculated.
- Fixed; not free; sedentary.
- Specifically, in Crustacea: Having no peduncle, as a cirriped; belonging to the Sessilia. Having no stalk or ophthalmite, as an eye.
- In conchology, having no stalk or ommatophore, as an eye.
- In entomology, not petiolate, as an abdomen.
- In Hydroida, not detachable or separable, as a gonophore.
- adj. zoology permanently attached to a substrate; not free to move about; “an attached oyster”
- adj. botany attached directly by the base; not having an intervening stalk.
GNU Webster's 1913
- adj. Attached without any sensible projecting support.
- adj. (Bot.) Resting directly upon the main stem or branch, without a petiole or footstalk.
- adj. (Zoöl.) Permanently attached; -- said of the gonophores of certain hydroids which never became detached.
- adj. attached directly by the base; not having an intervening stalk
- adj. permanently attached to a substrate; not free to move about
- From New Latin sessīlis ("sitting"), from sessus, perfect passive participle of verb sedēre ("sit"), + adjective suffix -īlis. Compare session. (Wiktionary)
- Latin sessilis, low, of sitting, from sessus, past participle of sedēre, to sit. (American Heritage® Dictionary of the English Language, Fourth Edition)
“The ganglia had already finished migrating to three new positions, repeating the same spherical configuration each time, before Richard recognized that what was growing in the sessile was a manna melon.”
“Perhaps, Richard mused, the sessile is a recording device only, and is incapable of imagination.”
“They may be sessile, that is, the cup rests immediately on the ground or wood, or leaves, or they may possess a short, or rather long stalk.”
“From these lateral stemmed species there is an easy transition to the stemless forms which are sessile, that is, the shelving forms where the pileus is itself attached to the trunk, or other object of support on which it grows.”
“The term _sessilifolius_ has been given to this species of Cytisus, because the leaves are for the most part sessile, that is sit close to the branches, without any or very short footstalks; such they are at least on the flowering branches when the shrub is in blossom, but at the close of the summer they are no longer so, the leaves acquiring very evident footstalks.”
“Serrated colorectal polyps include the subgroups hyperplastic polyps, sessile serrated polyps (also called sessile serrated adenomas), and serrated adenomas.”
“That alien face - it supposely has a "sessile" compound eye, by which it is meant - not on a stalk.”
“Many ponds are seasonal, lasting just a couple of months (such as sessile pools) while lakes may exist for hundreds of years or more.”
“Clover is a pair of leaves; the blossom is said to be "sessile" or seated on these leaves.”
“Do legislators imagine that pedophiles are sessile creatures, like sea anemones or Venus fly-traps, and have to wait passively for their victims to come withreach?”
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