adj 1  :  of, relating to, or characterized by equality of measure : esp  :  relating to or being a crystallographic system characterized by three equal axes at right angles  2  :  of, relating to, involving, or being muscular contraction (as in isometrics) against resistance, without significant shortening of muscle fibers, and with marked increase in muscle tone - compare ISOTONIC2    3  :  ISOVOLUMETRIC iso*met*ri*cal*ly adv 
 
 
 
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