One of the mysteries of the English language finally explained.
Originally; †a treatise on the sense of smell and odours (obsolete). Later: the scientific study of the sense of smell.
Mid 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From French osphrésiologie from ancient Greek ὄσϕρησις smelling, smell + French -ologie.
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