CAUSTIC; CAUSTICAL a.
tirical; sharp; as, a caustic remark. Caustic curve (Optics), a curve to which the ray of light, reflected or refracted by another curve, are tangents, the reflecting or refracting curve and the luminous point being in one plane. -- Caustic lime. See under Lime. -- Caustic potash, Caustic soda (Chem.), the solid hydr…
CELESTIAL a.
or pertaining to the spiritual heaven; heavenly; divine. "Celestial spirits." "Celestial light," Milton. Celestial city, heaven; the heavenly Jerusalem. Bunyan. -- Celestial empire, China; -- so called from the Chinese words, tien chan, Heavenly Dynasty, as being the kingdom ruled over by the dynasty appoined by heav…
CELLULOSE n.
he solid framework of plants, of ordinary wood, linen, paper, etc. It is also found to a slight extent in certain animals, as the tunicates. It is a carbohydrate, (C6H10O5)n, isomeric with starch, and is convertible into starches and sugars by the action of heat and acids. When pure, it is a white amorphous mass. See S…