ellipsoid

1. 1.

   a surface whose plane sections are all ellipses or circles

   “the Earth is an ellipsoid”

   Broaderplane figure

1. 1.

   having the nature or shape of an ellipsoid

   Synonymsellipsoidalspheroidal

   Similarrounded

Other forms of ellipsoid

plural

ellipsoids·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about ellipsoid

What does ellipsoid mean?

ellipsoid means "a surface whose plane sections are all ellipses or circles". That is the primary sense; the word has 2 in total, listed in full on this page.

How many syllables are in ellipsoid?

ellipsoid has 3 syllables: el-lip-soid. The stress falls on "lip". In IPA it is /ɪˈlɪpsɔɪd/.

What is another word for ellipsoid?

Close synonyms include ellipsoidal, spheroidal. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is ellipsoid a common word?

ellipsoid is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.