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astrophotometrical
astrophotometrical adj. 
/ˌæstroʊˌfoʊdəˈmɛtrək(ə)l/ Astronomy (now historical) of or relating to the use of an astrophotometer.
Brit. /ˌastrə(ʊ)ˌfəʊtə(ʊ)ˈmɛtrᵻkl/
, /ˌastrə(ʊ)ˌfəʊtə(ʊ)ˈmɛtrᵻkl/U.S. /ˌæstroʊˌfoʊdoʊˈmɛtrək(ə)l/
, /ˌæstroʊˌfoʊdoʊˈmɛtrək(ə)l//ˌæstroʊˌfoʊdəˈmɛtrək(ə)l/ΚΠ
1878 Astron. Soc. Notices 38 65 On a new astrophotometrical method.
2007 K. Staubermann Astronomers at Work 50 I will try to explain in detail the Vienna Academy's interest in astro-photometrical measurements.
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