Where does “photoelectrograph” come from?

photoelectrograph (English) comes 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, from Proto-Indo-European bʰeh₂-.

photoelectrograph (English): An electrometer registering by photography

Definitions

  1. An electrometer registering by photography

Ancestry of “photoelectrograph”, step by step

photoelectrograph traces back through two separate lines of ancestry.

via English photo

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

via English electrograph

StepLanguageWordMeaning
1EnglishelectrographA machine used in gravure printing; A recording...
2EnglishgraphA data chart intended to illustrate the...
3Ancient Greekγράφωto scratch, cut into; to draw, sketch, paint; to...
4Proto-Hellenicgrəpʰōto scratch, cut or carve into
5Proto-Indo-Europeangerbʰ-to carve
6Proto-Indo-Europeanger-to turn, bend, twist, wind; to tie, bind...
Every word from Proto-Indo-European bʰeh₂-s-ri-Every word from Proto-Indo-European bʰeh₂-Every word from Ancient Greek φωτο-