noropianic

from The Century Dictionary.

• Noting an acid, a colorless crystalline compound, , prepared by the action of hydriodic acid on opianic acid. It melts, when anhydrous, at 171° C.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Chem.) Of, pertaining to, or designating, an acid of the aromatic series obtained from opianic acid.