Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
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