Where does “cão-guia” come from?

cão-guia (Portuguese) comes from Portuguese guia, from Portuguese guiar, from Old Portuguese guiar, from Old French guier, from Occitan guida, from Occitan guidar, from Frankish wītan, from Proto-Germanic *witaną — to see.

cão-guia (Portuguese): guide dog dog that is trained to be of assistance to a blind person

Definitions

  1. guide dog dog that is trained to be of assistance to a blind person

Ancestry of “cão-guia”, step by step

cão-guia traces back through two separate lines of ancestry.

via Portuguese guia

StepLanguageWordMeaning
1Portugueseguiaguide; leash
2Portugueseguiarto lead; to guide; to direct; to drive; to guide
3Old Portugueseguiar
4Old Frenchguierto guide
5Occitanguida
6Occitanguidarto guide, to lead
7Frankishwītanto show the way, lead; to accuse, to blame
8Proto-Germanic*witaną
9Proto-Indo-Europeanwóydeto have seen, to know
10Proto-Indo-Europeanweyd-to see

via Portuguese cão

StepLanguageWordMeaning
1Portuguesecãodog; the Devil; white-haired
2Old Portuguesecão
3Latincanuswhite; hoary; frothy
4Proto-Italickaznosgrey
5Proto-Indo-Europeanḱas-grayish-white; white, blond, grey; blond; grey;...
Every word from Proto-Indo-European weyd-