Late 19th century; earliest use found in Alfred Newton (1829–1907), zoologist. From classical Latin perturbant-, perturbāns, present participle of perturbāre; compare -ant.
Definition of perturbant in US English:
perturbant
nounpəˈtəːb(ə)nt
A perturbing agent. rare.
Origin
Late 19th century; earliest use found in Alfred Newton (1829–1907), zoologist. From classical Latin perturbant-, perturbāns, present participle of perturbāre; compare -ant.