Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. ădactus, a, um, Part. of adigo.
* 2. ădactus, ūs, m. [adigo], a forcing or bringing to or together.
Hence, poet., of the teeth, a biting, a bite: dentis adactus, Lucr. 5, 1330.