noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An opioid antagonist from the morphinan family. uncountable
2. 2
   drug (trade name Lorfan) that is related to morphine but that counteracts the respiratory depression produced by morphine poisoning but without affecting its analgesic effects wordnet

Synonyms

All synonyms

lorfan

Etymology

From lev- + all(yl) + -orphan (“morphinan derivate”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.