adj 1 a  :  lying or intersecting at right angles  b  :  being, using, or made with three ECG leads whose axes are perpendicular to each other and to the frontal, horizontal, and sagittal axes of the body <the three leads were recorded simultaneously on magnetic tape -Massoud Nemati et al>   2  :  statistically independent <mental ability may be classified into several … factors -O. D. Duncan>  .
 
 
 
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