Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Origin: lysergic acid diethylamide

LSD

 noun
     
Related topics: Drug Culture
LSD [uncountable]
MDD an illegal drug that makes you see things as more beautiful, strange, frightening etc than usual, or makes you see things that do not exist [= acid]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary

Browse the dictionary