{ } a. [ Gr. &unr_;: cf. F. elliptique. See Ellipsis. ] 1. Of or pertaining to an ellipse; having the form of an ellipse; oblong, with rounded ends. [ 1913 Webster ]
The planets move in elliptic orbits. Cheyne. [ 1913 Webster ]
The billiard sharp who any one catches, His doom's extremely hard -- He's made to dwell In a dungeon cell On a spot that's always barred. And there he plays extravagant matches In fitless finger-stalls On a cloth untrue With a twisted cue And elliptical billiard balls! Gilbert and Sullivan (The Mikado: The More Humane Mikado Song)
2. Having a part omitted; as, an elliptical phrase. [ 1913 Webster ]
3. leaving out information essential to comprehension; so concise as to be difficult to understand; obscure or ambiguous; -- of speech or writing; as, an elliptical comment. [ PJC ]
Elliptic chuck. See under Chuck. -- Elliptic compasses, an instrument arranged for drawing ellipses. -- Elliptic function. (Math.) See Function. -- Elliptic integral. (Math.) See Integral. -- Elliptic polarization. See under Polarization. [ 1913 Webster ]
n. [ Cf. F. ellipticité. ] Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is 1/29966. [ 1913 Webster ]
☞ Some writers use ellipticity as the ratio of the difference of the two semiaxes to the minor axis, instead of the major. Nichol. [ 1913 Webster ]
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