·noun A portion; a fragment.
II. Fraction ·noun The act of breaking, or state of being broken, especially by violence.
III. Fraction ·noun One or more aliquot parts of a unit or whole number; an expression for a definite portion of a unit or magnitude.
IV. Fraction ·vt To separate by means of, or to subject to, fractional distillation or crystallization; to Fractionate;
— frequently used with out; as, to fraction out a certain grade of oil from pretroleum.