[{"word":"ellipsoids","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A surface, all of whose cross sections are elliptic or circular (including the sphere), that generalises the ellipse and in Cartesian coordinates (x, y, z) is a quadric with equation x2/a2 + y2/b2 + z2/c2 = 0.","synonyms":[],"antonyms":[]},{"definition":"Such a surface used as a model of the shape of the earth.","synonyms":[],"antonyms":[],"example":"Here the geoid is thirty meters below the ellipsoid."}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/ellipsoid","https://en.wiktionary.org/wiki/ellipsoids"]}]