Hypertext Webster Gateway: "thirtieth"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Thirtieth \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.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Thirtieth \Thir"ti*eth\, n.
The quotient of a unit divided by thirty; one of thirty equal
parts.
From WordNet (r) 1.7 (wn)
thirtieth
adj : coming next after the twenty-ninth in position [syn: {30th}]
n : position 30 in a countable series of things
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