Assertion: reference ellipsoid | /r/CapableOf | approximate the geoid
Facets:
Source sentences:
text: In geodesy, a reference ellipsoid is a mathematically defined surface that approximates the geoid, the truer[further explanation needed] figure of the Earth, or other planetary body.
text: In geodesy, a reference ellipsoid is a mathematically-defined surface that approximates the geoid, the truer figure of the Earth, or other planetary body.