Definify.com
Webster 1913 Edition
Pinacone
Pin′a-cone
,Noun.
[From Gr. [GREEK], [GREEK], a tablet. So called because it unites with water so as to form tablet-shaped crystals.]
(Chem.)
A white crystalline substance related to the glycols, and made from acetone; hence, by extension, any one of a series of substances of which pinacone proper is the type.
[Written also
pinakone
.]