noun
- a colorless, oily, toxic chemical compound found in tobacco leaves that acts as a stimulant and is highly addictive
Usage: mass noun; commonly used in scientific and medical contexts
Examples
- Nicotine is the addictive substance in cigarettes.
- The nicotine patch helps smokers quit by delivering small doses of the drug.
- Nicotine levels in the bloodstream peak within minutes of smoking.
- Many e-cigarettes contain nicotine extracted from tobacco.
- Nicotine is a stimulant that increases heart rate and blood pressure.