sixty-third

[siks-tee-thurd]
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adjective

next after the sixty-second; being the ordinal number for 63.
being one of 63 equal parts.

noun

a sixty-third part, especially of one (1/63).
the sixty-third member of a series.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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