a. [f. next + -ABLE.] Capable of being superposed.
1870. Chauvenet, Elem. Geom., VIII. 265. The triangles … are mutually equilateral, and also isosceles; therefore they are superposable and are equal in area.
1882. Minchin, Unipl. Kinemat., 68. Any two possible acceleration systems in uniplanar motion are superposable in a single acceleration system.
