FRACTIONAL a.
small; inconsiderable; insignificant; as, a fractional part of the population. Fractional crystallization (Chem.), a process of gradual and approximate purification and separation, by means of repeated solution and crystallization therefrom. -- Fractional currency, small coin, or paper notes, in circulation, of less v…
ISOMETRIC; ISOMETRICAL a.
Noting, or conforming to, that system of crystallization in which the three axes are of equal length and at right angles to each other; monometric; regular; cubic. Cf. Crystallization. Isometric lines (Thermodynamics), lines representing in a diagram the relations of pressure and temperature in a gas, when the volume r…