coexistent

coexistent
    adj 1: existing at the same time [syn: {coexistent},
           {coexisting}]
    

Coexistent \Co`ex*ist"ent\, a.
   Existing at the same time with another. -- n. That which
   coexists with another.
   [1913 Webster]

         The law of coexistent vibrations.        --Whewell.
   [1913 Webster]
    

70 Moby Thesaurus words for "coexistent":
      accompanying, accordant, affirmative, agreeable, agreeing,
      answerable, at one, coetaneous, coeternal, coeval, coexisting,
      coherent, coincident, coinciding, coinstantaneous, collateral,
      commensurate, compatible, concomitant, concordant, concurrent,
      concurring, conformable, congenial, congruent, congruous,
      consentaneous, consentient, consistent, consonant, contemporaneous,
      contemporary, conterminous, cooperating, cooperative,
      correspondent, corresponding, coterminous, en rapport, equivalent,
      harmonious, in accord, in agreement, in rapport, in sync,
      in synchronization, inaccordance, inharmony, isochronal,
      isochronous, like-minded, of a piece, of like mind, of one mind,
      on all fours, positive, proportionate, reconcilable,
      self-consistent, simultaneous, symbiotic, synchronal, synchronic,
      synchronized, synchronous, unanimous, uniform, unison, unisonant,
      unisonous