adj, noun — 4 senses
Etymology Originally from Medieval Latin operātōrium, from a participle of Late Latin operor. The modern senses may be derived independently of the obsolete senses.
Obsolete effective; practical; operative
Of or relating to operations.
Etymology Originally from Medieval Latin operātōrium, from a participle of Late Latin operor. The modern senses may be derived independently of the obsolete senses.
Obsolete A laboratory.
Medicine, Sciences A room in which a dentist (or assistant) performs tasks on the patient.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.