Definition of accessorily in English:

accessorily

adverb

  • 1In a supplementary or subordinate manner; as an adjunct; additionally; secondarily; incidentally.

  • 2Law. = "accessarily".

Origin

Late 15th century; earliest use found in Apology for Lollard Doctrines. Apparently partly (in early use) from post-classical Latin accessorius accessory + -ly, and partly (in later use) from accessory + -ly. Compare post-classical Latin accessorie as an accessory or adjunct.