Webster's Revised Unabridged Dictionary · 1913

Oleoresin

Oleoresin , noun

[Latin oleum oil + English resin.]

1.
(Chemistry) A natural mixture of a terebinthinate oil and a resin.
2.
(Medicine) A liquid or semiliquid preparation extracted (as from capsicum, cubebs, or ginger) by means of ether, and consisting of fixed or volatile oil holding resin in solution.