Where does “photometrist” come from?

photometrist (English) comes from English photometry, from English photo, from English photography, from French photographie, from Ancient Greek φωτο-, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os.

photometrist (English): A specialist in photometry

Definitions

  1. A specialist in photometry

Ancestry of “photometrist”, step by step

photometrist traces back through two separate lines of ancestry.

via English photometry

StepLanguageWordMeaning
1EnglishphotometryThe measurement of various aspects of light,...
2EnglishphotoA photograph; A photo finish; To take a...
3EnglishphotographyThe art and technology of producing images on...
4Frenchphotographiephotography; photograph
5Ancient Greekφωτο-
6Ancient GreekφῶςAttic form of φᾰ́ος
7Proto-Hellenicpʰáos
8Proto-Indo-Europeanbʰéh₂os
9Proto-Indo-Europeanbʰeh₂-to shine, glow light; to speak, say
10Proto-Indo-Europeanbʰeh₂-s-ri-

via English ist

StepLanguageWordMeaning
1EnglishistA practitioner or supporter of an ism
2English-istAdded to words to form nouns denoting
3Old French-iste
4Latin-ista-ist; one who practises or believes
5Ancient Greek-ιστήςAlternative form of -τής; -ist
6Ancient Greek-τήςAppended to verbs to form agent nouns
7Proto-Hellenic-tās
Every word from Proto-Indo-European bʰeh₂-s-ri-Every word from Proto-Indo-European bʰeh₂-Every word from Ancient Greek φωτο-