Definition
caffeins
noun
- Plural of caffein; a bitter alkaloid stimulant found in coffee, tea, and other plants, used to increase alertness.
Usage: Caffein is an older or variant spelling of caffeine; both forms are used, though caffeine is more common in modern English.; Typically used in scientific or technical contexts.
Examples
- The researcher studied how different caffeins affect human metabolism.
- Various caffeins are extracted from natural sources for use in beverages.
- The lab analyzed the caffeins present in different tea varieties.
- Caffeins from coffee and chocolate have similar chemical structures.
- The study compared the effects of caffeins on sleep patterns.