Definition of Omnopon in US English:

Omnopon

noun

Pharmacology
  • A narcotic analgesic consisting of a mixture of the hydrochlorides of the opium alkaloids. [A trademark in the United Kingdom.]

Origin

Early 20th century; earliest use found in The Trade Marks Journal. From classical Latin omn- (in omnis all: see omni-) + op- + -on, arbitrary ending.

Pronunciation

Omnopon

/ˈɒmnəpɒn/