THC
What does "THC" mean?
Tetrahydrocannabinol, the molecule in cannabis that binds to cannabinoid receptors in the human brain. This is, essentially, what gets you high, and high-THC strains will get you higher. Not to be confused with CBD, which does not have psychoactive effects but can be used medicinally to treat patients.
Example usage:
I wonder what it would be like to smoke 100% pure THC.