An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Elongated in the direction of the polar diameter; opposed to → oblate

From L. prolatus, pt.p. of proferre "to bring forward, extend," from → pro- + → oblate.

Kešidé p.p. of Mod./Mid.Pers. kešidan, kašidan "to draw, protract, trail, drag, carry," dialectal Yaqnavi xaš "to draw," Qomi xaš "streak, stria, mark," Lori kerr "line;" Av. karš- "to draw; to plow," karša- "furrow;" Proto-Iranian *kerš-/*xrah- "to draw, plow;" cf. Skt. kars-, kársati "to pull, drag, plow;" Gk. pelo, pelomai "to move, to bustle;" PIE base k^wels- "to plow."

An ellipsoid produced by rotating an ellipse through 360° about its major axis. → oblate spheroid.

→ prolate; → spheroid.