Bible Dictionaries
Fortieth

Webster's Dictionary

(1):

(a.) Following the thirty-ninth, or preceded by thirty-nine units, things, or parts.

(2):

(a.) Constituting one of forty equal parts into which anything is divided.

(3):

(n.) One of forty equal parts into which one whole is divided; the quotient of a unit divided by forty; one next in order after the thirty-ninth.