Bible Dictionaries
Thirtieth

Webster's Dictionary

(1):

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

(2):

(a.) Constituting or being one of thirty equal parts into which anything is divided.

(3):

(a.) Next in order after the twenty-ninth; the tenth after the twentieth; - the ordinal of thirty; as, the thirtieth day of the month.

Bibliography Information
Webster, Noah. Entry for 'Thirtieth'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/thirtieth.html. 1828.