i'somet'ric ex'ercise

1. exercise or a program of exercises to strengthen specific muscles or shape the figure by pitting one muscle or part of the body against another or against an immovable object in a strong but motionless action, as by pressing the fist of one hand against the palm of the other or against a desk.
2. any specific exercise of this type.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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