from The Century Dictionary.
- noun A neutral substance (C10H10O4) existing in opium. It is white, fusible, and crystalline.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A substance regarded as an anhydride of meconinic acid, existing in opium and extracted as a white crystalline substance. Also erroneously called
meconina, meconia, etc., as though it were an alkaloid.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry A substance regarded as an
anhydrideof meconinic acid, found in opium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
meconic + -in? Compare French méconine.
_papaverin_ also; while _meconin_, whose acrid properties in contact with animal tissue are similar to that of meconic acid, forms the last of the group.