1 the remainder : the part that is left when the other people or things are gone, used, etc.
▪ Most of the university's students live on campus and the remainder [=the rest] rent apartments in town. — often + of ▪ The players will be suspended for the remainder of the season. ▪ The remainder of the money will be donated to charity. 2 [count] mathematics a : the number that is left when one number is subtracted from another number
▪ 2 subtracted from 5 gives a remainder of 3.
b : the number that is left over when one number does not divide evenly into another number
▪ 5 goes into 29 five times with a remainder of 4. 3 [count] : a book that is sold at a reduced price by the publisher : a book that is remaindered