Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dĭpondĭum = dupondium, q. v., Vulg. Luc. 12, 6.
dū̆pondĭus, ii, m., or dŭpondĭum, ii (cf. Varr. L. L. 9, 49, § 81; also, dĭpon-dĭum, Gromat. Vet. p. 28, 14; p. 167, 11), n. [duo-pondus], the sum of two asses.