The capability or quality of shrinking or contracting, especially by muscle fibers and even some other forms of living matter WordNet 3.0 & Open English WordNet

Contractility refers to the ability for self-contraction, especially of the muscles or similar active biological tissue Contractile ring in cytokinesis Contractile vacuole Muscle contraction Myocardial contractility See contractile cell for an overview of cell types in humans. Wikipedia

The intrinsic ability of the heart/myocardium to contract Wikipedia Disambiguation