2 definitions
for evacuant
From The Collaborative International Dictionary of English v.0.48 :
Evacuant \E*vac"u*ant\, a. [L.evacuans, -antis, p. pr. of
evacuare: cf. F. ['e]vacuant.]
Emptying; evacuative; purgative; cathartic. -- n. (Med.) A
purgative or cathartic.
[1913 Webster]
From WordNet (r) 2.0 :
evacuant
adj : strongly laxative [syn: cathartic, purgative]