1.NounAn integer that is less than another, but that does not divide the other integer into integral parts.
2.NounA portion of a total amount (of some substance or a sample/specimen thereof) that does not divide evenly into it, thus leaving a (nonzero) remainder.
3.NounSynonym of aliquot.
4.AdjectiveLess than another specified integer, but not dividing it into integral parts.