a geometric surface produced by rotating an ellipse about one of its two axes and having circular plane surfaces perpendicular to the axis of revolution Also called spheroid
- Ellipsoidal joint
ellipsoidal joint el·lip·soi·dal joint (i-lĭp-soid’l, ěl’ĭp-, ē’lĭp-) n. A modified biaxial ball-and-socket joint in which the joint surfaces are elongated or ellipsoidal. Also called condylar joint.
[ih-lip-soid-l, el-ip-, ee-lip-] /ɪ lɪpˈsɔɪd l, ˌɛl ɪp-, ˌi lɪp-/ adjective 1. pertaining to or having the form of an .
[ih-lip-soid] /ɪˈlɪp sɔɪd/ noun 1. Geometry. a solid figure all plane sections of which are ellipses or circles. Typical equation: (x 2 / a 2) + (y 2 / b 2) + (z 2 / c 2) = 1. adjective 2. . /ɪˈlɪpsɔɪd/ noun 1. n. 1721; see ellipse + -oid. From 1861 as an […]
[el-ver] /ˈɛl vər/ noun 1. a young eel, especially one that is migrating up a stream from the ocean. /ˈɛlvə/ noun 1. a young eel, esp one migrating up a river from the sea See also leptocephalus n. “young eel,” 1640s, variant of eelfare (1530s), literally “passage of young eels up a river;” see eel […]