Share this entry

Share this page

lunula

Syllabification: lu·nu·la
Pronunciation: /ˈlo͞onyələ
 
/

Definition of lunula in English:

noun (plural lunulae /-ˌlē, -ˌlī/)

1A crescent-shaped object or mark, in particular.
1.1The 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.
1.2 Printing One of a pair of parentheses.
Example sentences
  • It is this contrast between the syntactical presumption of the lunulae and the effect is actually has which poets have exploited.

Origin

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

Derivatives

lunular

1
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

2
Pronunciation: /-ˌlāt, -lit/
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.

Definition of lunula in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day tenebrous
Pronunciation: ˈtenəbrəs
adjective
dark; shadowy or obscure