Definitions for: Thirtieth

[n] position 30 in a countable series of things
[adj] coming next after the twenty-ninth in position

Webster (1913) Definition: Thir"ti*eth, a. [From Thirty: cf. AS.
[thorn]r[=i]tig[=o][eth]a.]
1. Next in order after the twenty-ninth; the tenth after the
twentieth; -- the ordinal of thirty; as, the thirtieth day
of the month.

2. Constituting or being one of thirty equal parts into which
anything is divided.

Thir"ti*eth, n.
The quotient of a unit divided by thirty; one of thirty equal
parts.

Synonyms: 30th, ordinal

See Also: rank

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