In the context of cannabis, half-life refers to the amount of time it takes for the concentration of THC or other cannabinoids in the body to decrease by half. For example, a scientist might say, “The half-life of THC can vary depending on the individual and the method of consumption.” Understanding the half-life of cannabinoids is crucial for understanding their effects on the body, including the duration of their effects and the time it takes for them to be eliminated from the body.