Definition of lunule in English:


Syllabification: lu·nule
Pronunciation: /ˈlo͞onˌyo͞ol


  • 1A crescent-shaped or oval part or marking, in particular.
  • 1.1An oval depression in front of the beak on the outside of many clams.
    More example sentences
    • Therefore, the possession of the anterior, unpaired lunule in ambulacrum III, is a plesiomorphic character for the Mellitidae in general.
    • This type of lunule is completely unknown in any other echinoid.
    • Other measurements of test length, lunule lengths, widths, positions, apex position, and petaloid lengths were made from both the fossil and extant Leodia material using dial calipers.
  • 1.2A small area above the antennae on the front of some kinds of flies.
    More example sentences
    • A small median plate lying between the ptilinal fissure and the bases of the antennae is named the lunule.
    • The frontal lunule is a small crescent shaped piece immediately above the antennae, which is characteristic of the second suborder, the Cyclor rhapha.

More definitions of lunule

Definition of lunule in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
elaborate ornamentation of a vocal melody