Cornstarch (or corn flour) usually works best with water-based sauces, reduced stock, jus from meats, wine sauces, wine-soy-vinegar Chinese sauces, etc. Make a thin paste of cornstarch and water, and stir that into the very warm liquids in the pot or pan. Over-heating or over-cooking will break down the starches.
maintaining, or pertaining to, the same length; of equal dimensions. isometric contraction. muscle contraction without appreciable shortening or change in distance between its origin and insertion. isometric exercise. active exercise performed against stable resistance, without change in the length of the muscle.
1 Eccentric Muscle Contraction: During eccentric muscle contractions, the muscle fibers are stretched out. The muscle returns to the starting position of the exercise during eccentric contractions, such as a fully-extended arm.  Isometric Muscle Contraction: Isometric contractions do not cause any joint movement.