THC

play
noun \ ˌtē-(ˌ)āch-ˈsē \

Definition of THC

:either of two physiologically active isomers C21H30O2 from hemp plant resin; especially :one that is the chief intoxicant in marijuana

Origin and Etymology of thc

tetrahydrocannabinol


Medical Dictionary

THC

play
noun \ ˌtē-ˌāch-ˈsē \

medical Definition of THC

:either of two physiologically active isomers C21H30O2 that occur naturally in hemp plant resin or are synthetically prepared:
a :one that is the chief intoxicant in marijuana and is used medicinally called also delta-9-tetrahydrocannabinol, delta-9-THC; see dronabinol
b :one that is present in marijuana only in minute quantities

Learn More about thc


Seen and Heard

What made you want to look up THC? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

of yeast or being unsettled or frivolous

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!