Source : Webster's Revised Unabridged Dictionary (1913)

Asyndetic \As`yn*det"ic\, a. [See {Asyndeton}.]
   Characterized by the use of asyndeton; not connected by
   conjunctions. -- {As`yn*det"ic*al*ly}, adv.

Source : WordNet®

asyndetic
     adj : lacking conjunctions [ant: {syndetic}]