Definition of photometrical in English:
photometrical
adjective ˌfəʊtə(ʊ)ˈmɛtrɪkl
Origin
Late 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. From photo- + -metrical, after photometry.
Definition of photometrical in US English:
photometrical
adjectiveˌfəʊtə(ʊ)ˈmɛtrɪkl
Origin
Late 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. From photo- + -metrical, after photometry.