Definitions

1. adjective

relating to or denoting an increase in the size or strength of muscle fibres in response to exercise or the use of weights, as opposed to isotonic exercise which does not increase muscle size

“The weightlifter engaged in auxotonic exercises to improve her muscle mass.”

2. noun

a muscle or muscle group that exhibits auxotonic properties

“The trainer analyzed the auxotonic effects of the weightlifting program on her clients.”