COEXTENSIVE
coextensive, coterminous, conterminous
(adjective) being of equal extent or scope or duration
Source: WordNet® 3.1
Etymology
Adjective
coextensive (not comparable)
Having the same spatial limits or boundaries; sharing the same area.
Occurring over the same period of time; contemporaneous.
(logic) Having the same extension—the object or set of objects to which a term refers.
Source: Wiktionary
Co`ex*ten"sive, a.
Definition: Equally extensive; having as, consciousness and knowledge are
coextensive. Sir W. Hamilton.
– Co`ex*ten"sive*ly, adv.
– Co`ex*ten"sive*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition