CAUSTIC; CAUSTICAL a.
, the solid hydroxides potash, KOH, and soda, NaOH, or solutions of the same. -- Caustic silver, nitrate of silver, lunar caustic. -- Caustic surface (Optics), a surface to which rays reflected or refracted by another surface are tangents. Caustic curves and surfaces are called catacaustic when formed by reflection,…
CROWN n.
tamped with the image of a crown; hence,a denomination of money; as, the English crown, a silver coin of the value of five shillings sterling, or a little more than $1.20; the Danish or Norwegian crown, a money of account, etc., worth nearly twenty-seven cents.
CUP n.
A small vessel, used commonly to drink from; as, a tin cup, a silver cup, a wine cup; especially, in modern times, the pottery or porcelain vessel, commonly with a handle, used with a saucer in drinking tea, coffee, and the like.