AURA n.
ht vapor, or cold air, rising from the trunk or limbs towards the head, a premonitory symptom of epilepsy or hysterics. Electric ~, a supposed electric fluid, emanating from an electrified body, and forming a mass surrounding it, called the electric atmosphere. See Atmosphere, 2.
AZOLE n.
y of a large class of compounds characterized by a five- membered ring which contains an atom of nitrogen and at least one other noncarbon atom (nitrogen, oxygen, sulphur). The prefixes furo-, thio, and pyrro-are used to distinguish three subclasses of azoles, which may be regarded as derived respectively from furfuran…
BALL n.
ve (Mach.), a contrivance by which a ball, placed in a circular cup with a hole in its bottom, operates as a valve. -- Ball vein (Mining), a sort of iron ore, found in loose masses of a globular form, containing sparkling particles. -- Three balls, or Three golden balls, a pawnbroker's sign or shop.…
BALSAM n.
, syrupy balsam, obtained from a Central American tree ( Myroxylon Pereiræ and used as a stomachic and expectorant, and in the treatment of ulcers, etc. It was long supposed to be a product of Peru. -- Balsam of Tolu, a reddish or yellowish brown semisolid or solid balsam, obtained from a South American tree ( Myxoxyl…