| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024el•lip•soid (i lip′soid),USA pronunciation n. - Mathematics[Geom.]a solid figure all plane sections of which are ellipses or circles. Typical equation: (x2/a2) + (y2/b2) + (z2/c2) = 1.
adj. - Mathematicsellipsoidal.
- French ellipsoïde. See ellipse, -oid
- 1715–25
Collins Concise English Dictionary © HarperCollins Publishers:: ellipsoid /ɪˈlɪpsɔɪd/ n - a geometric surface, symmetrical about the three coordinate axes, whose plane sections are ellipses or circles. Standard equation: x²/a² + y²/b² + z²/c² = 1, where ±a, ±b, ±c are the intercepts on the x-, y-, and z- axes
- a solid having this shape
ellipsoidal /ɪlɪpˈsɔɪdəl ˌɛl-/ adj |