fractional: Meaning and Definition of

frac•tion•al

1. pertaining to fractions; comprising a part or the parts of a unit; constituting a fraction: fractional numbers.
2. comparatively small; inconsiderable or insignificant: The profit on the deal was fractional.
3. of or noting a process, as distillation, crystallization, or oxidation, by which the component substances of a mixture are separated according to differences in certain of their properties, as boiling point, critical temperature, or solubility.