Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
quā̆drĭdŭānus (quā̆trĭd-), a, um, adj. [quadriduum], of four days, for the space of four days: Lazarus mortuus, Hier. Ep. 108, n. 24; Vulg. Joan. 11, 39.