POLYCHORD Pol"y*chord, n. (Mus.) (a) A musical instrument of ten strings. (b) An apparatus for coupling two octave notes, capable of being attached to a keyed instrument.
POLYCHREST
Pol"y*chrest, n. Etym: [Gr. polychreste.] (Med.)
Defn: A medicine that serves for many uses, or that cures many diseases. [Obs.] Polychrest salt (Old Med. Chem.), potassium sulphate, specifically obtained by fusing niter with sulphur.
POLYCHROISM
Pol"y*chro*ism, n. Etym: [Poly- + Gr.
Defn: Same as Pleochroism.
POLYCHROITE
Pol"y*chro*ite, n. Etym: [Poly- + Gr. polychroïte.] (Chem.)
Defn: The coloring matter of saffron; — formerly so called because of the change of color on treatment with certain acids; — called also crocin, and safranin.
POLYCHROMATE
Pol`y*chro"mate, n. Etym: [See Polychromic.] (Chem.)
Defn: A salt of a polychromic acid.
POLYCHROMATE
Pol`y*chro"mate, n. Etym: [See Polychromatic.] (Chem.)