Definition - What does Marichyasana D mean?
Marichyasana D is a seated twist with one leg bent into a squat position and one leg in padmasana. The name comes from the fact it is named after the sage, Marichi. His name is Sanskrit meaning “ray of light.”
It forms part of the primary series in Ashtanga yoga, where the first four variations of Marichyasana A, B, C and D are performed in sequence.
The Western name for Marichyasana D is Marichi's pose D.
Yogapedia explains Marichyasana D
The sage, Marichi, is a mythological Hindu figure and the son of Brahma. He is said to be one of the seven seers, or wise lords, who heard Brahma’s words and translated them into Sanskrit. These words were the divine law of the universe, or dharma.
Like many twists, Marichyasana D is said to be a cleansing and purifying pose. It is stimulating and energizing as it improves the flow of prana throughout the body. Because of the challenging nature of this posture and the danger of forcing the body into the pose before it is ready, it is a good posture for teaching the importance of patient, consistent practice. It is also a good pose for teaching surrender, as the most comfortable way into the posture is through release and calm breathing, as opposed to striving and effort.