Also 7 exuction. [n. of action f. L. exsūgĕre, f. ex- out + sūgĕre to suck. Cf. SUCTION.] The action of sucking out, esp. the drawing out (air) by an air-pump.
1660. Boyle, New Exp. Phys.-Mech., Proem 5. The exsuction of Air.
1713. Derham, Phys. Theol., 8, footn. In the Air-pump [some] Animals die in less than half a Minute, counting from the very first Exsuction.
1832. in Webster; and in mod. Dicts.