[ deks ]

nounPharmacology Informal.
  1. short for dextromethorphan.

verb (used without object)dexed, dex·ingSlang.
  1. to take dangerously large amounts of over-the-counter cough suppressants containing dextromethorphan in order to get high.

Origin of dex

First recorded in 1960–65

Words Nearby dex Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use dex in a sentence

  • Then, before dex's staring eyes appeared a huge, wedge-shaped head, at sight of which he bit his lips to keep from crying aloud.