Definition
Ayurveda is a wholistic system of medicine from India that uses a constitutional model. Its aim is to provide guidance regarding food and lifestyle so that healthy people can stay healthy and folks with health challenges can improve their health. [quote from Ayurvedic Foundation]

Origin
Ayurveda is an intricate system of healing that originated in India thousands of years ago. We can find historical evidence of Ayurveda in the ancient books of wisdom known as the Vedas. In the Rig Veda, over 60 preparations were mentioned that could be used to assist an individual in overcoming various ailments. The Rig Veda was written over 6,000 years ago, but really Ayurveda has been around even longer than that. What we see is that Ayurveda is more than just a medical system. It is a Science of Life. We are all part and parcel of nature. Just as the animals and plants live in harmony with nature and utilize the Laws of Nature to create health and balance within their beings, we, too, adhere to these very same principles. Therefore, it is fair to say that Ayurveda is a system that helps maintain health in a person by using the inherent principles of nature to bring the individual back into equilibrium with their true self. In essence Ayurveda has been in existence since the beginning of time because we have always been governed by nature's laws. [quote from Ayurvedic Foundation]

Meaning
Ayurveda is made up of two Sanskrit words: Ayu which means life and Veda which means the knowledge of. To know about life is Ayurveda. However, to fully comprehend the vast scope of Ayurveda let us first define "Ayu" or life. According to the ancient Ayurvedic scholar Charaka, "ayu" is comprised of four essential parts. The combination of mind, body, senses and the soul. [quote from Ayurvedic Foundation]