Appurtenant

a.	1.	Annexed or pertaining to some more important thing; accessory; incident; as, a right of way appurtenant to land or buildings. Common appurtenant (Law) See under Common, n.
n.	1.	Something which belongs or appertains to another thing; an appurtenance. Mysterious appurtenants and symbols of redemption. - Coleridge.

Adj.

1.

appurtenant - relating to something that is added but is not essential; "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxilliary to each other" Synonyms: accessory, adjunct, adjuvant, ancillary, subsidiary, auxiliary

APPURTENANT. Belonging to; pertaining to of right.

accessory, adjunct, adjuvant, ancillary, auxiliary, subsidiary, supportive