THC

noun
\ ˌtē-(ˌ)āch-ˈsē How to pronounce THC (audio) \

Definition of THC

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

First Known Use of THC

1967, in the meaning defined above

History and Etymology for THC

tetrahydrocannabinol

Keep scrolling for more

Learn More about THC

Dictionary Entries near THC

thawless

thawy

Thayer

THC

ThD

thdr

the

Statistics for THC

Look-up Popularity

Time Traveler for THC

The first known use of THC was in 1967

See more words from the same year

Keep scrolling for more

More Definitions for THC

THC

noun
\ ˌtē-ˌāch-ˈsē How to pronounce THC (audio) \

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

Comments on THC

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

WORD OF THE DAY

to affect and impair by alcohol or a drug

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

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!