THC
noun
: either of two physiologically active isomers C21H30O2 from hemp plant resin
especially
: one that is the chief intoxicant in marijuana
When a person tokes, eats or vapes cannabis, a wave of THC, or tetrahydrocannabinol, washes into the brain. —
Laura Sanders
Laura Sanders THC, the main chemical component of marijuana, has been shown to reduce nausea and increase appetite in chemotherapy patients. —Andrew Weil
Andrew Weil THC disappears from blood quickly as it is absorbed in the brain, making blood tests a more reliable measure of recent use but not a great correlate of impairment. —Eliza Gray
Eliza Gray Examples of THC in a Sentence
Recent Examples on the Web
In Tennessee, Schedule VI drugs include marijuana and THC.
—Taijuan Moorman, USA TODAY, 3 Sep. 2024
At the same time, more young adults are consuming products with THC.
—Benjamin Adams, Forbes, 3 Sep. 2024
Average patients purchase the equivalent of 206 mg per day of THC, the psychoactive compound in the plant.
—Worth Sparkman, Axios, 16 Aug. 2024
All that remained was a standard pre-employment drug test, which came back positive for THC.
—Ashley Okwuosa, The Examination | Zoe Jaeger, Milwaukee Journal Sentinel | Amy Yurkanin, Al.com, Journal Sentinel, 14 Aug. 2024
See all Example Sentences for THC 
Taijuan Moorman, USA TODAY, 3 Sep. 2024
At the same time, more young adults are consuming products with THC.
—Benjamin Adams, Forbes, 3 Sep. 2024
Average patients purchase the equivalent of 206 mg per day of THC, the psychoactive compound in the plant.
—Worth Sparkman, Axios, 16 Aug. 2024
All that remained was a standard pre-employment drug test, which came back positive for THC.
—Ashley Okwuosa, The Examination | Zoe Jaeger, Milwaukee Journal Sentinel | Amy Yurkanin, Al.com, Journal Sentinel, 14 Aug. 2024
See all Example Sentences for THC
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'THC.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near THC
Cite this Entry
“THC.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/THC. Accessed 17 Sep. 2024.
Copy CitationMedical Definition
THC
noun
: 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share