• synonyms


[ley-bee-uh m]
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noun, plural la·bi·a [ley-bee-uh] /ˈleɪ bi ə/.
  1. a lip or liplike part.
  2. Anatomy.
    1. a lip or lip-shaped structure or part.
    2. any of the folds of skin bordering the vulva.
  3. Botany. the lower lip of a bilabiate corolla.
  4. Entomology. the posterior, unpaired member of the mouthparts of an insect, formed by the united second maxillae.
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Origin of labium

1590–1600; < Latin: lip, akin to lambere to lick, lap3. See labrum1, lip
Related formspseu·do·la·bi·um, noun, plural pseu·do·la·bi·a.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for labium

Historical Examples

  • But the structure of the tongue itself (labium, l) is most curious.

    Our Common Insects

    Alpheus Spring Packard

  • The labium is as long as it is in Drassus, but contracted at the base.

  • The labium is short and the maxillæ straight, as in Anyphæna.

  • The labium is narrowed at the end and a little longer than wide (fig. 26).

  • The labium is long and narrow, and forked at the end (fig. 72).

British Dictionary definitions for labium


noun plural -bia (-bɪə)
  1. a lip or liplike structure
  2. any one of the four lip-shaped folds of the female vulvaSee labia majora, labia minora
  3. the fused pair of appendages forming the lower lip of insects
  4. the lower lip of the corolla of labiate flowers
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Word Origin

C16: New Latin, from Latin: lip
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

Word Origin and History for labium


1590s, plural labia, from Latin labium "lip" (see lip (n.)).

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Online Etymology Dictionary, © 2010 Douglas Harper

labium in Medicine


n. pl la•bi•a (-bē-ə)
  1. A lip or lip-shaped anatomical structure.
  2. Any of four folds of tissue of the female external genitalia.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

labium in Science


Plural labia
  1. Either of two pairs of folds of tissue that make up part of the external genitalia of female mammals.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.