WordReference Random House Unabridged Dictionary of American English © 2026
as•tro•pho•tom•e•try
(as′trō fō tom′i trē),USA pronunciation n.
as•tro•pho•to•met•ric
(as′trō fō′tə me′trik),USA pronunciation as′tro•pho′to•met′ri•cal, adj.
as′tro•pho′to•met′ri•cal•ly, adv.
- Astronomythe measurement of the intensity of light of celestial objects.
- astro- + photometry
'astrophotometric' also found in these entries (note: many are not synonyms or translations):