Etymology

thirteenth

thir·teenth
T1H4I1R1T1E1E1N1T1H4

Today it means: The ordinal form of the number thirteen. Full definition →

Middle English thrittenthe ← Old English þrēottēoþa
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The story

  1. Old English · inherited fromþrēottēoþa
  2. Middle English · inherited fromthrittenthe
  3. English todaythirteenth

Inherited from Middle English thrittenthe, thrittethe, from Old English þrēottēoþa; equivalent to thirteen + -th (ordinal suffix).

Etymology from Wiktionary, CC BY-SA 4.0.