Plant-based sweetener is a term used to describe a type of sweetener that is derived from plants. One example of a plant-based sweetener is stevia, which is a natural sweetener extracted from the leaves of the stevia plant. It has been used as a sweetener for centuries and is now becoming increasingly popular due to its low-calorie content and lack of artificial ingredients. Stevia is a six-letter word that is often used to refer to plant-based sweeteners.