The Collaborative International Dictionary
Rotative engine
Rotative \Ro"ta*tive\, a. [Cf. F. rotatif.] turning, as a wheel; rotary; rotational.
This high rotative velocity of the sun must cause an
equatorial rise of the solar atmosphere.
--Siemens.
Rotative engine, a steam engine in which the reciprocating motion of the piston is transformed into a continuous rotary motion, as by means of a connecting rod, a working beam and crank, or an oscillating cylinder.