opianine \o"pi*a*nine\, n. (Chem.)
An alkaloid ({C22H23NO7}) found in small quantity in opium.
It is identical with {narcotine}. It is present in amounts up
to 11% in {Papaver somniferum}, and is used clinically as an
antitussive. --MI11
Syn: noscapine; narcosine; opian.
[1913 Webster +PJC]