"motility" in the noun sense
1. motility
ability to move spontaneously and independently
2. motion, movement, move, motility
a change of position that does not entail a change of location
"the reflex motion of his eyebrows revealed his surprise"
"movement is a sign of life"
"an impatient move of his hand"
"gastrointestinal motility"
Source: WordNet® (An amazing lexical database of English)
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