A narcotic drug derived from morphine and used in the form of its hydrochloride as an analgesic.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for metopon
Historical Examples of metopon
This is a difficulty which seems to compel the assumption that the metopon was in part of lighter material.
The distance which the metopon projected into the building is not certainly known.