noun Descargar 🔗Compartir Cafeína An alkaloid, C8H10N4O2, found naturally in tea and coffee plants which acts as a mild stimulant on the central nervous system. Examples : "Many students drink coffee for the caffeine to help them stay awake and study. " Muchos estudiantes beben café por la cafeína para ayudarlos a mantenerse despiertos y estudiar. substance drink chemistry compound physiology medicine energy food plant biochemistry Chat con IAJuego de vocabularioPracticar lectura