n. [ L., fr. Gr. bde`llion; cf. Heb. b'dolakh bdellium (in sense 1). ] 1. An unidentified substance mentioned in the Bible (Gen. ii. 12, and Num. xi. 7), variously taken to be a gum, a precious stone, or pearls, or perhaps a kind of amber found in Arabia. [ 1913 Webster ]

2. A gum resin of reddish brown color, brought from India, Persia, and Africa. [ 1913 Webster ]

☞ Indian bdellium or false myrrh is an exudation from Balsamodendron Roxburghii. Other kinds are known as African bdellium, Sicilian bdellium, etc. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. bde`lla leech + -oid. ] (Zool.) The order of Annulata which includes the leeches. See Hirudinea. [ 1913 Webster ]

n. [ Gr. bde`lla leech + -meter. ] (Med.) A cupping glass to which are attached a scarificator and an exhausting syringe. Dunglison. [ 1913 Webster ]

‖pos>n. [ NL., fr. Gr. bde`lla leech + morfh` form. ] (Zool.) An order of Nemertina, including the large leechlike worms (Malacobdella) often parasitic in clams. [ 1913 Webster ]