Meconic \Me*con"ic\, a. [Gr. ? belonging to the poppy, fr. ? the
poppy: cf. F. m['e]conique.]
Pertaining to, or obtained from, the poppy or opium; specif.
(Chem.), designating an acid related to aconitic acid, found
in opium and extracted as a white crystalline substance.
[1913 Webster]