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labium

Syllabification: la·bi·um
Pronunciation: /ˈlābēəm
 
/

Definition of labium in English:

noun (plural labia /-bēə/)

1 Entomology A fused mouthpart that forms the floor of the mouth of an insect.
Example sentences
  • Biplica, in addition, lacks the strongly tubercled and denticulate labium of Eriptycha.
  • Insects close off the posterior of the mouth with a second ‘lip,’ the labium.
  • Several groups developed active predatory larvae, still showing the spoon-shaped labium.
2 Botany The lower lip of the flower of a plant of the mint family.

Origin

late 16th century (in the general sense 'lip, liplike structure'): from Latin, 'lip'; related to labrum.

Definition of labium in:

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