CONTRACTILITY

contractility. Contractility, n. the power of contracting itself

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Con′trac‐til″i‐ty (?), n. 1. 1. The quality or property by which bodies shrink or contract.
2. 2. (Physiol.) The power possessed by the fibers of living muscle of contracting or shortening.
☞ When subject to the will, as in the muscles of locomotion, such power is called voluntary contractility; when not controlled by the will, as in the muscles of the heart, it is involuntary contractility.