Where does “duograph” come from?

duograph (English) comes from English duo, from French duo, from Italian duo, from Latin duō, from Proto-Italic duō, from Proto-Indo-European dwóh₁ — two.

duograph (English): A picture printed from two halftone photographic...

Definitions

  1. A picture printed from two halftone photographic...

Ancestry of “duograph”, step by step

duograph traces back through two separate lines of ancestry.

via English duo

StepLanguageWordMeaning
1EnglishduoTwo people who work or collaborate together as...
2Frenchduoduo; duet
3ItalianduoObsolete form of due; duo; duet
4Latinduōtwo; 2
5Proto-Italicduōtwo
6Proto-Indo-Europeandwóh₁two

via English graph

StepLanguageWordMeaning
1EnglishgraphA data chart intended to illustrate the...
2Ancient Greekγράφωto scratch, cut into; to draw, sketch, paint; to...
3Proto-Hellenicgrəpʰōto scratch, cut or carve into
4Proto-Indo-Europeangerbʰ-to carve
5Proto-Indo-Europeanger-to turn, bend, twist, wind; to tie, bind...
Every word from Proto-Indo-European dwóh₁