Definition of lunate in English:

Share this entry

lunate

Pronunciation: /ˈlo͞onāt/

adjective

Crescent-shaped.
Example sentences
  • The lunate microsporophylls and densely packed sporangia are consistent with the morphology of other noeggerathialean cones, such as Discinites Feistmanlel.
  • Tellingly, a structure called the lunate sulcus was pushed toward the back of her brain, as it is in H. sapiens's, leaving more space for areas involved in advanced association, forward planning, and problem solving.
  • It is supported by a narrow lunate platform along the dorsal margin.

noun

(also lunate bone) Anatomy
A crescent-shaped carpal bone situated in the center of the wrist and articulating with the radius.
Example sentences
  • The proximal row of carpal bones includes the scaphoid, lunate, triquetrum, and pisiform, which are closely approximated to the distal radius.
  • In prolonged cases, osteophytes may occur at the dorsal rim of the distal radius or dorsal aspects of the scaphoid or lunate.
  • When the ulna is shorter than the radius, the lunate bone absorbs more force when the wrist is used for heavy gripping activities.

Origin

Late 18th century: from Latin lunatus, from luna 'moon'.

For editors and proofreaders

Syllabification: lu·nate

Share this entry
 

What do you find interesting about this word or phrase?

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