Lâd'a-nûm, n.

n. [Also labdanum.] [Lat. ladanum, ledanum, Gr. λάδανον, λήδανον, Per. lādan, lāden, Heb. loth, the resinous juice obtained from a shrub called lada, leda, Gr. λάδον, λήδον.] A gum resin of a dark color and pungent odor. It is the inspissated juice which exudes from the Cistus ladaniferus, C. Creticus, and other species of the same plant found around the Mediterranean. It is chiefly used as a mild stimulant in external applications.