Etymology

classroom

class·room
C3L1A1S1S1R1O1O1M3

Today it means: A room, often in a school, where classes take place. Full definition →

English room ← Middle English roum ← Old English rūm
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The story

  1. Proto-Indo-European*kelh₁-
  2. Proto-Italic*klāssis
  3. Latinclassis
  4. Middle Frenchclasse
  5. Englishclass
  6. Proto-Indo-European*Hrew-?
  7. Proto-Indo-European*(H)rewH-
  8. Proto-Germanic*rūmą
  9. Proto-West Germanic*rūm
  10. Old Englishrūm
  11. Middle Englishroum
  12. Englishroom
  13. English todayclassroom

From class + room.

Etymology from Wiktionary, CC BY-SA 4.0.