See Also: thirteenth(dictionary)

thirteenth (iou)



thirteenth adjective & noun (ordinal numeral).
[Old English TreoteoTa, Trie- repl. in northern Middle English by (metathesized and non-metathesized) forms of Old Norse Trettande from which, in 16, the mod. form developed, as if from THIRTEEN + -TH2.]
A. adjective. Next in order after the twelfth, that is number thirteen in a series, (represented by 13th). OE.
thirteenth part arch. = sense B.3 below.
W. Stubbs The thirteenth century is the golden age of English churchmanship.
b. noun.
The thirteenth person or thing of a category, series, etc., identified contextually, as day of the month, (following a proper name) person, esp. monarch or pope, of the specified name, etc. OE.
A. Day Tuesday being the thirteenth of this instant.
Music. An interval embracing thirteen consecutive notes in the diatonic scale; a note a thirteenth above or below another given note; a chord of two notes a thirteenth apart, or based around the thirteenth of a note. LME.
Each of thirteen equal parts into which something is or may be divided, a fraction which when multiplied by thirteen gives one (= thirteenth part above); spec. (Hist.) a tax equal to one such part formerly imposed on personal property. E17.
Comb.: Forming compound numerals with multiples of a hundred, as five-hundred-and-thirteenth (513th) etc.
thirteenthly adverb in the thirteenth place E17.