e·qui·pon·der·ance (ē'kwə-pŏn'dər-əns, ěk'wə-) n. Equality of weight; equipoise.
[From equiponderant, having equal weight, from Medieval Latin aequiponderāns, aequiponderant-, present participle of aequiponderāre, to weigh the same; see equiponderate.] e'qui·pon'der·ant adj.