Defn: The act or practice of multiplying copies of one's own handwriting, or of manuscripts, by printing from stone, — a species of lithography.
POLYBASIC
Pol`y*ba"sic, a. Etym: [Poly- + basic.] (Chem.)
Defn: Capable of neutralizing, or of combining with, several molecules of a monacid base; having several hydrogen atoms capable of being replaced by basic radicals; — said of certain acids; as, sulphuric acid is polybasic.
POLYBASITE
Pol`y*ba"site, n. Etym: [See Polybasic.] (Min.)
Defn: An iron-black ore of silver, consisting of silver, sulphur, and antimony, with some copper and arsenic.
POLYBRANCHIA
Pol`y*bran"chi*a, n. pl. Etym: [NL. See Poly-, and Branchia.] (Zoöl.)
Defn: A division of Nudibranchiata including those which have numerous branchiæ on the back.
POLYBROMIDE
Pol`y*bro"mide, n. Etym: [Poly- + bromide.] (Chem.)
Defn: A bromide containing more than one atom of bromine in the molecule.
POLYCARPELLARY
Pol`y*car"pel*la*ry, a. (Bot.)