ATHANASIAN a.
4th century. Athanasian creed, a formulary, confession, or exposition of faith, formerly supposed to have been drawn up by Athanasius; but this opinion is now rejected, and the composition is ascribed by some to Hilary, bishop of Arles (5th century). It is a summary of what was called the orthodox faith.…
ATOMIC; ATOMICAL a.
f definite proportions (Chem.), teaches that chemical combinations take place between the supposed ultimate particles or atoms of bodies, in some simple ratio, as of one to one, two to three, or some other, always expressible in whole numbers. -- Atomic weight (Chem.), the weight of the atom of an element as compared…
AURORA n.
ularly called northern lights. A luminous meteoric phenomenon, visible only at night, and supposed to be of electrical origin. This species of light usually appears in streams, ascending toward the zenith from a dusky line or bank, a few degrees above the northern horizon; when reaching south beyond the zenith, it form…
BALSAM n.
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 ( Myxoxylon toluiferum.). It is highly fragrant, and is used as a stomachic and expe…