Definition of lune in US English:



  • 1A crescent-shaped figure formed on a sphere or plane by two arcs intersecting at two points.

    • ‘He squared certain lunes, and also the sum of a lune and a circle.’
    • ‘In case the reader is wondering what Aristotle refers to with his phrase ‘quadrature by means of segments' then it is almost certain that he means the method of lunes of Hippocrates.’
    • ‘Hippocrates was able to find the areas of lunes, certain crescent-shaped figures, using his theorem that the ratio of the areas of two circles is the same as the ratio of the squares of their radii.’
    • ‘To illustrate with one example, the work of Hippocrates on the quadrature of lunes is only known to us through Eudemus's History of Geometry.’
    • ‘In particular Simplicius quotes the writing on Eudemus on Antiphon's attempts to square the circle and also the attempts of Hippocrates when he squared certain lunes.’
    • ‘The squaring of the circle by means of lunes is not eristic, but the quadrature of Bryson is eristic.’
    1. 1.1 A filled pasta case made from a circle of pasta dough folded over.
      • ‘But that trademark finesse is never far away in the form of goat cheese tortelloni with dried orange and fennel pollen, or pumpkin lune with butter and sage.’
      • ‘I made Lauren get the pumpkin lune because you have to have the pumpkin lune when you go there.’
      • ‘Lisa had the pumpkin lune complete with grated cookie.’


Early 18th century: from French, from Latin luna ‘moon’.