A part of any thing broken. A combination of numbers, in arithmetic and algebra, representing one or more parts of a unit or integer. Thus, four-fifths is a fraction, formed by dividing a unit into-five equal parts, and taking one part four times. In law, the term fraction is usually applied to the division of a day. 2. In general, there are no fractions in days. But in some cases a fraction will be taken into the account, in order to secure a party his rights. A breaking, or breaking up; a fragment or broken part; a portion of a thing, less than the whole. Jory v. Palace Dry Goods Co., 30 Or. 196, 46 Pac. 786. Fraction of a day. A portion of a day. The dividing a day. Generally, the law does not allow the fraction of a day. 2 Bl. Comm. 141.