a certain kind of definite integral that is not expressible by means of elementary functions.
[ih-lip-tis-i-tee, el-ip-, ee-lip-] /ɪ lɪpˈtɪs ɪ ti, ˌɛl ɪp-, ˌi lɪp-/ noun 1. the degree of divergence of an ellipse from a circle. /ɪlɪpˈtɪsɪtɪ; ˌɛl-/ noun 1. the degree of deviation from a circle or sphere of an elliptical or ellipsoidal shape or path, measured as the ratio of the major to the minor axes
noun, Geometry. 1. a paraboloid that can be put into a position such that its sections parallel to one coordinate plane are ellipses, while its sections parallel to the other two coordinate planes are parabolas.
noun 1. a spring formed from two leaf springs having their convex sides outward.
elliptocyte el·lip·to·cyte (ĭ-lĭp’tə-sīt’) n. An elliptical erythrocyte. Also called ovalocyte.