Lewis & Short

aequĭpărātĭo (better, aequīper-). ōnis, f. [aequiparo], an equalizing, a comparison: aequiperatio et parilitas virtutum inter se consimilium, Gell. 14, 3: rex de aequiperatione aestimanda (whether his army could be put on an equality with) quaesierat, id. 5, 5, 7