Definition of trihydric in English:



  • (of an alcohol) containing three hydroxyl groups.

    • ‘Glycerol is a trihydric alcohol, which means each molecule has three hydroxyl groups.’
    • ‘Glycerol is a trihydric alcohol because it contains three hydroxyl or alcohol groups.’
    • ‘Alcohols have one, two, or three hydroxyl groups attached to their molecules and are thus classified as monohydric, dihydric, or trihydric, respectively.’
    • ‘The trihydric alcohol structure of glycerin makes it a useful chemical in the manufacture of various hard foams, like those that are placed under siding in buildings and around dishwashers and refrigerators for insulation and sound proofing.’
    • ‘Fats are triesters that consist of the trihydric alcohol glycerol that is esterified with three fatty acids.’


Mid 19th century: from tri- ‘three’ + hydrogen + -ic.