# THC

CEFR C1 · Noun

Source: https://englishreference.com/word/thc
Updated: 2026-05-10

## Definition

Stands for tetrahydrocannabinol. It is the main chemical in cannabis that makes people feel high. It affects the brain and changes how you feel or see things.

For teachers: Abbreviation for tetrahydrocannabinol. The primary psychoactive constituent of cannabis, responsible for the majority of its psychological effects.

## Examples

- The lab tested the plant to measure its THC levels.
- Different strains of the plant contain varying concentrations of THC, which determines the strength of the effect on the user.
- Research into the medicinal properties of the plant often focuses on how THC interacts with the body's endocannabinoid system to modulate pain and appetite.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.