Definition of astrophotometer in English:
astrophotometer
nounˌastrə(ʊ)fə(ʊ)ˈtɒmɪtə
Astronomy historical An instrument for measuring the brightness of a star's light.
Origin
Mid 19th century; earliest use found in American Journal of Science. After German Astrophotometer.
Definition of astrophotometer in US English:
astrophotometer
nounˌastrə(ʊ)fə(ʊ)ˈtɒmɪtə
Astronomy historical An instrument for measuring the brightness of a star's light.
Origin
Mid 19th century; earliest use found in American Journal of Science. After German Astrophotometer.