Where does “proto-photon” come from?

proto-photon (English) comes from English photon, from English photo-, from Ancient Greek φωτο-, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os, from Proto-Indo-European bʰeh₂-, from Proto-Indo-European bʰeh₂-s-ri-.

proto-photon (English): A theoretical but not yet detected particle...

Definitions

  1. A theoretical but not yet detected particle...

Ancestry of “proto-photon”, step by step

proto-photon traces back through two separate lines of ancestry.

via English photon

StepLanguageWordMeaning
1EnglishphotonThe quantum of light and other electromagnetic...
2Englishphoto-light, electromagnetic radiation; photography
3Ancient Greekφωτο-
4Ancient GreekφῶςAttic form of φᾰ́ος
5Proto-Hellenicpʰáos
6Proto-Indo-Europeanbʰéh₂os
7Proto-Indo-Europeanbʰeh₂-to shine, glow light; to speak, say
8Proto-Indo-Europeanbʰeh₂-s-ri-

via English proto

StepLanguageWordMeaning
1EnglishprotoPrototypical; preceding the proper beginning of...
2Englishproto-first; most recent common ancestor of; Relating...
3Ancient Greekπρωτο-first, primary
4Ancient Greekπρῶτοςfirst; earliest; foremost, most prominent
5Ancient Greekπρόbefore; before, in front, forth, forward; before,...
6Proto-Indo-Europeanprótoward, leading to
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European bʰeh₂-s-ri-Every word from Proto-Indo-European bʰeh₂-Every word from Ancient Greek φωτο-