Used attributively in compounds (e.g., "zenith distance") meaning ‘relating to or situated at the zenith’.
Translations
zénithalTerme de géographie et d'astronomie. The instrument measures zenith angles with great precision.
L'instrument mesure les angles zénithaux avec une grande précision.
Definitions
Relating to or situated at the zenith. The instrument provides highly accurate readings of zenith angles.