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sessile

Definitions

  • WordNet 3.6
    • adj sessile attached directly by the base; not having an intervening stalk "sessile flowers","the shell of a sessile barnacle is attached directly to a substrate"
    • adj sessile permanently attached to a substrate; not free to move about "sessile marine animals and plants"
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Webster's Revised Unabridged Dictionary
    • Sessile Attached without any sensible projecting support.
    • Sessile (Zoöl) Permanently attached; -- said of the gonophores of certain hydroids which never became detached.
    • Sessile (Bot) Resting directly upon the main stem or branch, without a petiole or footstalk; as, a sessile leaf or blossom.
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Century Dictionary and Cyclopedia
    • sessile 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.
    • sessile In zoöl. and anatomy:
    • sessile Seated flat or low; fixed by a broad base; not stalked or pedunculated.
    • sessile Fixed; not free; sedentary.
    • sessile Specifically, in Crustacea: Having no peduncle, as a cirriped; belonging to the Sessilia. Having no stalk or ophthalmite, as an eye.
    • sessile In conchology, having no stalk or ommatophore, as an eye.
    • sessile In entomology, not petiolate, as an abdomen.
    • sessile In Hydroida, not detachable or separable, as a gonophore.
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Chambers's Twentieth Century Dictionary
    • adj Sessile ses′il (bot.) growing directly from the stem, without a foot-stalk, as some leaves.
    • ***

Etymology

Webster's Revised Unabridged Dictionary
L. sessilis, low, dwarf, from sedere, sessum, to sit: cf. F. sessile,
Chambers's Twentieth Century Dictionary
L. sessilis, low—sedēre, sessum, to sit.

Usage

In literature:

The =pileus= is elongated and attached at one side by being sessile, or it is narrowed into a very short stem.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc." by George Francis Atkinson
This is quite a large, massive plant, growing in a sessile and imbricated manner.
"The Mushroom, Edible and Otherwise" by M. E. Hard
Pods nearly sessile, 3 to 4 in.
"Trees of the Northern United States" by Austin C. Apgar
I am not by nature sessile.
"Miss Cayley's Adventures" by Grant Allen
This unique form is near the fuligos which it resembles, especially when sessile, in its intricate sporangia.
"The North American Slime-Moulds" by Thomas H. (Thomas Huston) MacBride
Leaves sessile, 15-30 mm.
"The Plants of Michigan" by Henry Allan Gleason
How he gets his teeth under the broad bases of the sessile cones, I don't know.
"My First Summer in the Sierra" by John Muir
Whole plant woody, sessile.
"Student's Hand-book of Mushrooms of America, Edible and Poisonous" by Thomas Taylor
The leaves of Mosses are always simple, distinct, and sessile on the stem.
"The Elements of Botany" by Asa Gray
The apricot is a low tree, of rather crooked growth, with somewhat heart-shaped leaves and sessile flowers.
"The New Gresham Encyclopedia. Vol. 1 Part 2" by Various
Are the eyes stalked, or are they sessile?
"A Guide for the Study of Animals" by Worrallo Whitney
The flowers are single or in clusters, and nearly sessile.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 8" by Various
Flowers in groups, sessile.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5" by Various
SECTION OF A SESSILE BARNACLE.
"Sea Monsters Unmasked and Sea Fables Explained" by Henry Lee
It carries two pairs of cephalic tentacles and a pair of sessile eyes.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5" by Various
The leaflets, oval and long-pointed, are sessile on the hairy leaf stalk, except the terminal one.
"Trees Worth Knowing" by Julia Ellen Rogers
Fertile flower a single 4-celled ovary, either sessile or pedicelled, bearing 2 distinct and filiform sessile, usually persistent stigmas.
"The Manual of the Botany of the Northern United States" by Asa Gray
The eyes are sometimes stalked, but in one species they are sessile.
"The Life of Crustacea" by William Thomas Calman
When sessile gonophores are produced, they may show all stages of degeneration.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 2" by Various
Stigmas 4, sessile, or nearly so; distinct or united.
"Woodland Gleanings" by Charles Tilt
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In poetry:

The leaves were succulent, thick, and green,
And, sessile, out of the snakelike stem
Rose spine-like fingers, alert and keen,
To catch at aught that molested them.
"Story" by Laurence Hope

In news:

Toadshade or Sessile trillium ( Trillium sessile ) has a stalkless flower of three, small, dark red petals that always remain in the closed position.
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In science:

A, B and C, very close to results obtained by the sessile drop method (tab. 1).
Capillary Bridge Formation and Breakage: A Test to Characterize Antiadhesive Surfaces
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