Pin"a*cone (?), n. [From Gr. , , 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.]
© Webster 1913.