diurnal parallax is a noun meaning "the parallax of a celestial body using two points on the surface of the earth as the earth rotates". It carries one recorded sense.
the parallax of a celestial body using two points on the surface of the earth as the earth rotates
Definitions, synonyms and semantic relations for diurnal parallax come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.