Definition of lunula in English:

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lunula

Pronunciation: /ˈluːnjʊlə/

noun (plural lunulae /ˈluːnjʊliː/)

1The white area at the base of a fingernail.
Example sentences
  • In patients with severe renal disease, the proximal portion of the nail bed can turn white, obliterating the lunula and giving a half-brown, half-white appearance, also called half-and-half nails.
  • The whitish, half-moon-shaped area at the base of your nail is called the lunula (LOO-nu-luh).
  • The whitish crescent-shaped area at the base of the nail is called the lunula.
2A crescent-shaped Bronze Age ornament worn as a necklace.

Derivatives

lunular

adjective
Example sentences
  • The vane guide plate is inserted in the lunular hollow formed by the curved walls of the vane.
  • Expression of ribs, and the lunular pit in Bothrocorbula, are used to a lesser extent for species discrimination.
  • When the weapon is outside of the spheroid, its system is limited in its search to a lunular segment of a sphere.

lunulate

adjective
Example sentences
  • The study has also resulted in a clearer picture of the biogeography and biostratigraphy of the Monophorasteridae, and their great significance in the evolution of lunulate sand dollars in the Americas.
  • Mooi also established that other lunulate taxa such as the Astriclypeidae Stefanini, 1912, were not more closely related to the mellitids than monophorasterids.
  • They also have important biogeographic implications, given that lunulate sand dollars are today rather rare in the regions in which monophorasterids were once common.

Origin

Late 16th century (denoting a crescent-shaped geometrical figure): from Latin, diminutive of luna 'moon'.

For editors and proofreaders

Line breaks: lun¦ula

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