coterminous

from WordNet (r) 3.0 (2006)

coterminous
    adj 1: being of equal extent or scope or duration [syn:
           {coextensive}, {coterminous}, {conterminous}]

from The Collaborative International Dictionary of English v.0.48

Coterminous \Co*ter"mi*nous\ (k?-t?r"m?-n?s), a. [Cf.
   {Conterminous}.]
   Bordering; conterminous; -- followed by with.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

47 Moby Thesaurus words for "coterminous":
      accompanying, adjacent, adjoining, agreeing, bordering, coequal,
      coetaneous, coeternal, coeval, coexistent, coexisting, coextensive,
      coincident, coincidental, coinciding, coinstantaneous, collateral,
      concomitant, concurrent, congruent, connecting, contemporaneous,
      contemporary, conterminous, contiguous, correspondent,
      corresponding, end to end, endways, endwise, equal, equivalent,
      face to face, immediate, isochronal, isochronous, joined,
      juxtaposed, juxtapositional, juxtapositive, neighbor, neighboring,
      next, simultaneous, synonymous, unison, unisonous