释义 |
pin·a·col \ˈpinəˌkȯl, -kōl\ noun (-s) Etymology: International Scientific Vocabulary pinac- + -ol; from the fact that it unites with water to form tabloid-shaped crystals 1. : a liquid glycol (CH3)2C(OH)C(OH)(CH3)2 that forms a crystalline hexahydrate C6H12(OH)2.6H2O and that is usually made from acetone by reduction with amalgamated magnesium followed by hydrolysis of the intermediate magnesium derivative; 2,3-dimethyl-2,3-butanediol 2. : any of a series of tetrasubstituted derivatives of ethylene glycol obtained by reduction of ketones other than acetone • pinacolic adjective |