Etymology

codomain

C3O1D2O1M3A1I1N1

Today it means: The target set into which a function is formally defined to map elements of its domain; the set denoted Y in the notation f : X → Y. Full definition →

English domain ← Middle English demayne ← Old French demaine
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The story

  1. Proto-Indo-European*ḱe?
  2. Proto-Indo-European*ḱóm
  3. Proto-Italic*kom
  4. Proto-Italic*kom-
  5. Latincon-
  6. Latinco-
  7. Englishco-
  8. Proto-Indo-European*dem-
  9. Proto-Indo-European*dṓmder.?
  10. Proto-Italic*domVnos
  11. Latindominus
  12. Latindominium
  13. Old Frenchdemaine
  14. Middle Englishdemayne
  15. Englishdomain
  16. English todaycodomain

From co- + domain.

Etymology from Wiktionary, CC BY-SA 4.0.