Chemistry. Compounds, insoluble in water, consisting of resins mixed with volatile oils. Formerly only those oleo-resinous compounds which…

a fragrant oleoresin obtained from the tree Commiphora opobalsamum (family Burseraceae) of Arabia and north-east Africa, formerly much used for…

(a) A natural plant product consisting of semi-solid mixture of an essential oil and a resin. Also called balsam. (b) A pharmaceutical preparation…