• Webster's Revised Unabridged Dictionary
    • a Orthocarbonic (Chem) Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4.
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Century Dictionary and Cyclopedia
    • orthocarbonic Designating a variety of carbonic acid, C(OH)4, which contains the maximum number of hydroxyl-groups. It does not exist in the free state.
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Webster's Revised Unabridged Dictionary
Ortho-, + carbonic,