nal·trex·one 
(năl-trĕksōn)
(năl-trĕksōn)n.
A synthetic opioid antagonist, C20H23NO4, used in its hydrochloride form to treat addiction to alcohol and to opioid drugs such as heroin.
[Blend of NALOXONE and tre- (probably alteration of TRI-, from the three carbon atoms of the propyl group that distinguishes it from naloxone, of which it is a congener).]
- Indo-European root: leigh-
- Indo-European root: leikw-
- Indo-European root: leip-
- Indo-European root: leis-
- Indo-European root: leis-
- Indo-European root: leit-
- Indo-European root: lendh-
- Indo-European root: leu-
- Indo-European root: leubh-
- Indo-European root: leudh-
- Indo-European root: leugh-
- Indo-European root: leuk-
- Indo-European root: leu(ə)-
- Indo-European root: lē-
- Indo-European root: līk-
- Indo-European root: lī̆no-
- Indo-European root: lūs-
- Indo-European root: mag-
- Indo-European root: magh-
- Indo-European root: maghu-
- Indo-European root: man-
- Indo-European root: man-
- Indo-European root: marko-
- Indo-European root: me-
- Indo-European root: me-