Early 18th century; earliest use found in John Quincy (d. 1722), apothecary and physician. Apparently an alteration of sensory after sensitive and perhaps also auditory.
Definition of sensitory in US English:
sensitory
adjectiveˈsɛnsɪt(ə)ri
Sensory.
Origin
Early 18th century; earliest use found in John Quincy (d. 1722), apothecary and physician. Apparently an alteration of sensory after sensitive and perhaps also auditory.