solar apex is a noun meaning "the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars". It carries one recorded sense.
the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars
Definitions, synonyms and semantic relations for solar apex come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.