THIRTEENTH

thirteenth. Thirteenth, a. the third in order after the tenth

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Thir″teenth′ (?), a. [[From Thirteen: cf. AS. �reóteó�a.]] 1. 1. Next in order after the twelfth; the third after the tenth; — the ordinal of thirteen; as, the thirteenth day of the month.
2. 2. Constituting or being one of thirteen equal parts into which anything is divided.