Definition of astrophotometrical in English:

astrophotometrical

adjective

Astronomy
historical
  • Of or relating to the use of an astrophotometer.

Origin

Late 19th century.

Pronunciation

astrophotometrical

/ˌastrə(ʊ)ˌfəʊtə(ʊ)ˈmɛtrɪkl/