equiponderant
adjective
equi·pon·der·ant ˌē-kwə-ˈpän-d(ə-)rənt 
ˌe-
: evenly balanced
Word History
Etymology
Medieval Latin aequiponderant-, aequiponderans, present participle of aequiponderare, from Latin aequi- + ponderare to weigh — more at ponder
First Known Use
1630, in the meaning defined above