Where does “photopositive” come from?

photopositive (English) comes from English positive, from Old French positif, from Latin posītivus, from Latin pōnō, from Proto-Italic poznō, from Proto-Italic pozinō, from Proto-Italic sinō.

photopositive (English): having a positive phototropic or phototactic...

Definitions

  1. having a positive phototropic or phototactic...

Ancestry of “photopositive”, step by step

StepLanguageWordMeaning
1EnglishpositiveNot negative or neutral; Formally laid down;...
2Old Frenchpositif—
3Latinposītivuspositive
4Latinpōnōto place; to put; to lay
5Proto-Italicpoznō—
6Proto-Italicpozinō—
7Proto-Italicsinō—
Every word from Proto-Italic sinō →Every word from Proto-Italic pozinō →Every word from Proto-Italic poznō →