- tonicity, tonus, tone - the elastic tension of living muscles, arteries, etc. that facilitate response to stimuli; "the doctor tested my tonicity"
--1 is a kind of tension, tensity, tenseness, tautness
Antonyms: atonicity, atony, atonia, amyotonia
--1 has particulars:catatonia; muscular tonus, muscle tone; myotonia; hypertonia, hypertonus, hypertonicity; hypotonia, hypotonus, hypotonicity