English Explanatory Dictionary

photometer

English dictionary entry

Meanings

noun
  1. Any of several instruments used to measure various aspects of the intensity of light.
verb
  1. To measure some aspect of light (from a star) using a photometer.

Pronunciation

/fəˈtɑmɪtɚ/ /ˈfoʊtoʊˌmitɚ/ /fəˈtɒmɪtə(ɹ)/ /ˈfəʊtəʊˌmiːtə(ɹ)/ LL-Q1860 (eng)-Vealhurl-photometer.wav

Word forms

photometer photometers photometering photometered

Etymology

Etymology tree Proto-Indo-European *bʰeh₂- Proto-Indo-European *bʰéh₂os Proto-Hellenic *pʰáwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Ancient Greek φωτο- (phōto-)der. English photo- Proto-Indo-European *meh₁- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron)der. English -meter English photometer From photo- + -meter.

Related words

photometric photometry

Derived words

astrophotometer bathyphotometer biophotometer fluorophotometer goniophotometer microphotometer nanophotometer photopolarimeter spectrophotometer sunphotometer telephotometer
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