Definition of lunate in English:

lunate

adjective

  • Crescent-shaped.

    • ‘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.’
    • ‘The lunate microsporophylls and densely packed sporangia are consistent with the morphology of other noeggerathialean cones, such as Discinites Feistmanlel.’
    • ‘It has derived frontal and temporal lobes and a lunate sulcus in a derived position, which are consistent with capabilities for higher cognitive processing.’
    • ‘It is supported by a narrow lunate platform along the dorsal margin.’
    • ‘The aft section is a freely flooded articulated robot tail which is terminated with a lunate caudal fin.’

noun

  • 1Archaeology
    A crescent-shaped prehistoric stone implement.

    • ‘It is only in the rock-shelter area, B, that we have classic lunates, here residuals in neolithic levels.’
    • ‘Blank production is the same as in the earlier assemblages technically, but among the microlith tools there are also trapezes and lunates in in addition to the triangles.’
    • ‘The lunates, barely a centimeter in length, were hafted onto shafts as transverse arrowheads, as documented by contemporary Egyptian finds.’
    • ‘The association of lunates and stone polishers in two of the burials found at the site is also significant.’
    • ‘Neolithic tools like points, trapezes and lunates made of chert and chalcedony, besides stone querns and grinders, decorated bone objects, pieces of ochre and human burials were also found here.’
  • 2Anatomy
    A crescent-shaped carpal bone situated in the centre of the wrist and articulating with the radius.

    • ‘The proximal row of carpal bones includes the scaphoid, lunate, triquetrum, and pisiform, which are closely approximated to the distal radius.’
    • ‘Disruption of the ligaments attached to the lunate leads to these different types of dislocation.’
    • ‘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.’
    • ‘The lateral view should be taken with the wrist in a neutral position in order to evaluate the alignment of the lunate with the rest of the wrist.’

Origin

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

Pronunciation

lunate

/ˈluːneɪt/