dionymal--prophetes.ai

dionymal

dionymal, a.
  (daɪˈɒnɪməl)
  [f. as prec. + -al¹.]
  Of or pertaining to a dionym; = binominal.

1656 Blount Glossogr., Dionymal, that hath two names. 1884 J. A. Allen On Zoöl. Nomen. in The Auk Oct. 352 The binomial (or dionymal) system.

Oxford English Dictionary