Found 2 items, similar to accessorial.
English → English (WordNet) Definition: accessorial accessorial adj : something added that is nonessential but helpful; “accessorial services included sorting and packing”
English → English (gcide) Definition: Accessorial Accessorial \Ac`ces*so"ri*al\, a. Of or pertaining to an accessory; as, accessorial agency, accessorial guilt. [1913 Webster]