Orthocarbonic \Or`tho*car*bon"ic\, a. [Ortho- + carbonic.]
(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}.
[1913 Webster]