Etymology

tierceron

T1I1E1R1C3E1R1O1N1

Today it means: A type of rib in Gothic vaulting, springing from the intersection of two other ribs. Full definition →

French tierceron
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The story

  1. French · borrowed fromtierceron
  2. English todaytierceron

From French tierceron, from tierce (“third”) + -eron.

Etymology from Wiktionary, CC BY-SA 4.0.