Where does “quarterdeck” come from?

Quarterdeck comes from English quarter, from French quartier, from French quart, from Latin -arius suffix and Latin quattuor meaning four.

quarterdeck (English): The aft part of the upper deck of a ship;...

Definitions

  1. The aft part of the upper deck of a ship;...

Ancestry of “quarterdeck”, step by step

quarterdeck traces back through two separate lines of ancestry.

via English deck

StepLanguageWordMeaning
1EnglishdeckAny raised flat surface that can be walked on: a...
2Middle Englishdekke
3Middle Dutchdecroof, covering
4Middle Dutchdeckento roof, to build/repair a roof; to cover; to...
5Old Dutchtheckento cover; to roof
6Proto-West Germanicþakkjanto cover; to burn
7Proto-Germanicþakjanąto cover; to burn
8Proto-Germanicþakąroof, cover
9Proto-Indo-European(s)teg-to cover; pole, stick, beam

via English quarter

StepLanguageWordMeaning
1Englishquarter"A fourth part of something."; "Place or...
2Middle EnglishquarterA quarter fourth part of something
3Anglo-Normanquarter
4Latinquartariusquartarius, a Roman unit of liquid measure equivalent to about 0.14 L
5Latinquārtusfourth
6Proto-Indo-Europeankʷeturtos
7Proto-Indo-Europeankʷetwóresfour
8Proto-Indo-Europeankʷe-and
Every word from Proto-Indo-European (s)teg-