Thirtieth

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.
n.	1.	The quotient of a unit divided by thirty; one of thirty equal parts.

Noun	1.	thirtieth - position 30 in a countable series of things
Adj.	1.	thirtieth - coming next after the twenty-ninth in position Synonyms: 30th

30th, ordinal