labium


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labium

1. a lip or liplike structure
2. any one of the four lip-shaped folds of the female vulva
3. the fused pair of appendages forming the lower lip of insects
4. the lower lip of the corolla of labiate flowers

labium

[′lā·bē·əm]
(biology)
A liplike structure.
The lower lip, as of a labiate corolla or of an insect.
References in periodicals archive ?
This genus is most closely related to Riazocoris in having labium reaching at least to metacoxae, sometimes passing much beyond to third abdominal segment and second antennal segment equal, subequal, or slightly shorter than third but it can easily be separated from the same in having labium passing much beyond metacoxae, reaching to third abdominal sternum, apical margin of scutellum distinctly round, not subacute and clypeus distinctly longer than paraclypei, dorsally raised.
7, antennal formula 1 less than 2=3 less than 4 less than 5; labium passing much beyond hind coxae reaching to 3rd abdominal venter, length of labial segments I 0.
One labium was removed entirely, and nerve damage resulted in loss of sensation and painful intercourse.
Clinical Features of Merkel Cell Carcinoma of the Genitourinary Tract Age, Size, Source, y y/Sex Site cm Tang et al, 67/F Labium minus 1.
Labium brownish, lighter at anterior margin, darker laterally; 1.