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Medical Definition of Oil of eucalyptus
1. Volatile oil from the fresh leaves of Eucalyptus globulus (family Myrtaceae) and some other species of Eucalyptus; native to Australia; pungent oil with a spicy, cooling taste. Has been used as an aromatic in inhalants, as an expectorant, anthelmintic, and local antiseptic. (05 Mar 2000)