PROOF a.
he elastic limit. -- Proof sheet. See Proof, n., 5. -- Proof spirit (Chem.), a strong distilled liquor, or mixture of alcohol and water, containing not less than a standard amount of alcohol. In the United States "proof spirit is defined by law to be that mixture of alcohol and water which contains one half of its vo…
PROPIONIC a.
Pertaining to, derived from, or designating, an organic acid which is produced in the distillation of wood, in the fermentation of various organic substances, as glycerin, calcium lactate, etc., and is obtained as a colorless liquid having a sharp, pungent odor. Propionic acid is so called because it is the first or lo…
PUNCH n.
A beverage composed of wine or distilled liquor, water (or milk), sugar, and the juice of lemon, with spice or mint; -- specifically named from the kind of spirit used; as rum punch, claret punch, champagne punch, etc. Milk punch, a sort of punch made with spirit, milk, sugar, spice, etc. -- Punch bowl, a large bowl i…
PYRIDINE n.
A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptomaïn…