Leftover is a synonym of remainder.
As adjectives the difference between leftover and remainder
is that
leftover is remaining; left behind; extra; in reserve while
remainder is remaining.
As nouns the difference between leftover and remainder
is that
leftover is something left behind; an excess or remainder while
remainder is a part or parts remaining after some has/have been removed.
As a verb remainder is
(commerce) to mark or declare items left unsold as subject to reduction in price.
Other Comparisons: What's the difference?
leftover English
Alternative forms
* left over, leftover
Adjective
( )
Remaining; left behind; extra; in reserve.
 Do you want some of the leftover supplies from the event?
(chiefly, in the plural, usually, of food) Remaining after a meal is complete or eaten for a later meal or snack.
 I have some leftover spaghetti in the fridge, so I don't plan to cook tonight.
 Not leftovers again.
Usage notes
* When used after a verb (as part of a predicate phrase), use two separate words:
*: I can walk for miles and still have energy left over.
Noun
( en noun)
Something left behind; an excess or remainder.
 It's a leftover from yesterday, but it's still perfectly good.
 The entire wheel of cheese is a leftover from the party.

remainder Alternative forms
* R (mathematics)
Noun
( en noun)
A part or parts remaining after some has/have been removed.
 ''My son ate part of his cake and I ate the remainder .
 ''You can have the remainder of my clothes.
*
 Thirdly, I continue to attempt to interdigitate the taxa in our flora with taxa of the remainder of the world.
(mathematics) The amount left over after subtracting the divisor as many times as possible from the dividend without producing a negative result. If (n) (dividend) and d'' (divisor) are integers, then (n) can always be expressed in the form ''n = dq + r'', where ''q'' (quotient) and ''r'' (remainder ) are also integers and 0 ≤ ''r'' < ''d .
 ''17 leaves a remainder of 2 when divided by 3.
 ''11 divided by 2 is 5 remainder 1.
(mathematics) The number left over after a simple subtraction
 ''10 minus 4 leaves a remainder of 6
(commerce) Excessive stock items left unsold and subject to reduction in price.
 ''I got a really good price on this shirt because it was a remainder .
(legal) An estate in expectancy which only comes in its heir's possession after an estate created by the same instrument has been determined
Synonyms
* (a part or parts remaining) remnant, residue, rest
* surplus
Derived terms
* remainderman
* contingent remainder
See also
* addition, summation: (augend) + (addend) = (summand) × (summand) = (sum, total)
* subtraction: (minuend) ? (subtrahend) = (difference)
* multiplication: (multiplier) × (multiplicand) = (factor) × (factor) = (product)
* division: (dividend) ÷ (divisor) = (quotient), remainder left over if divisor does not divide dividend
* modulus
See also
* remainderman
Adjective
()
remaining
Synonyms
* leftover
Verb
( en verb)
(commerce) To mark or declare items left unsold as subject to reduction in price.
 ''The bookstore remaindered the unsold copies of that book at the end of summer at a reduced price.
