Skip to main content
Select Source:

labrum

labrum
1. In Echinozoa, a lip-like projection of the peristome.

2. A broad piece of cuticle which forms the upper ‘lip’ in an insect. The labrum articulates with the clypeus. It is anterior to the mandibles, and can be moved away from them by a pair of muscles, or closed down on to them by another pair of muscles with a rocker-like action.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"labrum." A Dictionary of Zoology. . Encyclopedia.com. 18 Dec. 2017 <http://www.encyclopedia.com>.

"labrum." A Dictionary of Zoology. . Encyclopedia.com. (December 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/labrum

"labrum." A Dictionary of Zoology. . Retrieved December 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/labrum

labrum

labrum The upper lip in the mouthparts of an insect. It is formed from a plate of cuticle hinged to the head above the mouth and is used in feeding.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"labrum." A Dictionary of Biology. . Encyclopedia.com. 18 Dec. 2017 <http://www.encyclopedia.com>.

"labrum." A Dictionary of Biology. . Encyclopedia.com. (December 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/labrum-0

"labrum." A Dictionary of Biology. . Retrieved December 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/labrum-0

labrum

labrum (lay-brŭm) n. (pl. labra) a lip or liplike structure; occurring, for example, around the margins of the acetabulum.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"labrum." A Dictionary of Nursing. . Encyclopedia.com. 18 Dec. 2017 <http://www.encyclopedia.com>.

"labrum." A Dictionary of Nursing. . Encyclopedia.com. (December 18, 2017). http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/labrum

"labrum." A Dictionary of Nursing. . Retrieved December 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/labrum