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WordReference Random House Unabridged Dictionary of American English © 2024thir•teenth (thûr′tēnth′),USA pronunciation adj. - next after the twelfth;
being the ordinal number for 13. - being one of 13 equal parts.
n. - a thirteenth part, esp. of one (1⁄13).
- the thirteenth member of a series.
- bef. 900; thirteen + -th2; replacing Middle English thrittenthe (see three, tenth), Old English thryttēotha (see tithe)
Collins Concise English Dictionary © HarperCollins Publishers:: ˈthirˈteenth /ˈθɜːˈtiːnθ/ adj - (usually prenominal) coming after the twelfth in numbering or counting order, position, time, etc; being the ordinal number of thirteen: often written 13th
- (as noun): Friday the thirteenth
n - one of 13 equal or nearly equal parts of something
- (as modifier): a thirteenth part
- the fraction equal to one divided by 13 ( 1⁄13)
- an interval of one octave plus a sixth
See also interval - short for thirteenth chord
thir•teen /ˈθɜrˈtin/USA pronunciation n. [countable]- a cardinal number, 10 plus 3.
- a symbol for this number, as 13 or XIII.
- a set of this many persons or things.
adj. [before a noun] - amounting to 13 in number.
thir•teenth, adj. WordReference Random House Unabridged Dictionary of American English © 2024thir•teen (thûr′tēn′),USA pronunciation n. - a cardinal number, 10 plus 3.
- a symbol for this number, as 13 or XIII.
- a set of this many persons or things.
adj. - amounting to 13 in number.
- bef. 900; late Middle English thirttene, variant of Middle English thrittene, Old English thrēotēne; cognate with Dutch dertien, German dreizehn, Old Norse threttān. See three, -teen
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