9 letters · 12 points in Scrabble
noun a surface whose plane sections are all ellipses or circles
adjective having the nature or shape of an ellipsoid
originEtymology tree English ellipse Ancient Greek -ο- (-o-)der. Latin -o- Proto-Indo-European *weyd- Proto-Indo-European *-os Proto-Indo-European *wéydos Proto-Hellenic *wéidos Ancient Greek εἶδος (eîdos) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ειδής (-eidḗs) Latin -oīdēslbor. English -oid English ellipsoid From ellipse + -oid.
Etymology from Wiktionary, CC BY-SA 3.0