Mid 19th century; earliest use found in William T. Brande (1788–1866), chemist. From classific- + -ator. Compare French classificateur, Italian classificatore, both in sense ‘person who classifies objects, author of classifications’.
Definition of classificator in US English:
classificator
nounˈklasɪfɪkeɪtə
rare
Classifier.
Origin
Mid 19th century; earliest use found in William T. Brande (1788–1866), chemist. From classific- + -ator. Compare French classificateur, Italian classificatore, both in sense ‘person who classifies objects, author of classifications’.