a. and sb. Med. Obs. [f. L. attenuāt- (see ATTENUATE v.) + -IVE.] A. adj. Attenuating, attenuant. B. sb. An attenuating agent, an attenuant.
1656. Ridgley, Pract. Physick, 105. The spleen cannot endure Attenuatives.
1684. trans. Bonets Merc. Compit., VI. 211. Its heat and attenuative virtue.