Labrum

Definitions

  • Webster's Revised Unabridged Dictionary
    • Labrum A lip or edge, as of a basin.
    • Labrum (Zoöl) An organ in insects and crustaceans covering the upper part of the mouth, and serving as an upper lip. See Illust. of Hymenoptera.
    • Labrum (Zoöl) The external margin of the aperture of a shell. See Univalve.
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Century Dictionary and Cyclopedia
    • n labrum In zoöl, alip or lip-like part. Specifically In entomology, the so-called upper lip of an insect (the lower being the labium): a plate lying in front of the clypeus, and terminating the upper part of the head anteriorly. It generally has a vertical motion, but may be immovably attached. The labrum covers and partly conceals the organs of the mouth; it is found in most insects, but in Diptera it. is partly or wholly aborted, Illiger called this organ the clypeus, applying the term labrum to a narrow posterior division of the upper lip generally known as the appendicle. See cuts under Hymenoptera and Insecta.
    • n labrum In Rom. archæol., a bath-tub, especially one of those of hard, fine material more or loss richly sculptured, rather common in the museums of Italy. Also called lavabrum.
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Etymology

Webster's Revised Unabridged Dictionary
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Usage

In literature:

Labrum transverso-quadratum antice submembranaceum tomentosum subemarginatum.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]" by Phillip Parker King
Glossarium: Diptera; the labrum-epipharynx; q.v.
"Explanation of Terms Used in Entomology" by John. B. Smith
The labrum, or upper lip, is separated by a deep suture from the clypeus, and is trapezoidal in form.
"Our Common Insects" by Alpheus Spring Packard
The labrum forms a segment of a circle; it is reddish, edged with a small number of very short, stiff hairs.
"The Glow-Worm and Other Beetles" by Jean Henri Fabre
It had on one side the laconicum, containing the vase called labrum.
"Museum of Antiquity" by L. W. Yaggy
It will be remembered that the labrum is provided with a groove.
"Insects and Diseases" by Rennie W. Doane
The labrum, however, had not become bullate.
"A Monograph on the Sub-class Cirripedia (Volume 1 of 2)" by Charles Darwin
The large labrum conceals the jaws and inner mouth parts.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6" by Various
The calidarium (5) had the labrum (7) at one end, and the alveus (6) was in one side of the room.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 4" by Various
Face view of the head, showing the simple and compound eyes, the antennae, labrum, and palps.
"A Guide for the Study of Animals" by Worrallo Whitney
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In news:

Senators defenseman Jared Cowen is out of action for six to eight months after surgery to repair a torn labrum in his left hip.
Ottawa Senators defenseman Jared Cowen will be sidelined 6-to-8 months following surgery to repair a torn labrum in his left hip.
Ottawa, ON – Ottawa Senators defenseman Jared Cowen will be sidelined 6-to-8 months following surgery to repair a torn labrum in his left hip.
OTTAWA — Senators defenseman Jared Cowen is out of action for six to eight months following surgery to repair a torn labrum in his left hip.
An article on torn labrums that should frighten Erik Bedard.
Ed Reed says he has a torn labrum in his shoulder.
Sidney Rice has labrum damage in his shoulder.
Stilson lost for season with labrum tear.
Mike Holmgren revealed in his weekly Wednesday press conference that defensive end Patrick Kerney tore his labrum a second time and the surgery he had was more extensive than they thought it would be.
After three years, Thomas' torn labrum finally discovered.
Storm's Bird has labrum surgery to fix hip.
Today, Patrick Saunders of The Denver Post reported that Helton will have arthroscopic surgery to repair a torn labrum in his right and will miss the rest of the season.
Kim Klement/US Presswire Yankees pitcher Michael Pineda made a surprise appearance at Yankee Stadium prior to Tuesday's game, giving an update on his recovery from labrum surgery.
During an interview with a Baltimore radio station on Wednesday, safety Ed Reed said that he has a torn labrum in his shoulder.
Hankerson did not specify the nature of the surgery, but he tore the labrum in his right hip on Nov 13 when he was tackled by a Miami Dolphins defender.
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