The Collaborative International Dictionary
Coextensively
Coextensive \Co`ex*ten"sive\, a.
Equally extensive; having equal extent; as, consciousness and
knowledge are coextensive.
--Sir W. Hamilton. --
Co`ex*ten"sive*ly, adv. -- Co`ex*ten"sive*ness, n.
Wiktionary
coextensively
adv. To the same extent.