Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* assessōrĭus (ads-), a, um, adj. [assessor], pertaining to an assessor: Sabinus in adsessorio (sc. libro de adsessoris officio) ait, etc., Dig. 47, 10, 5, § 8.