onomatopoetic

from WordNet (r) 3.0 (2006)

onomatopoetic
    adj 1: of or relating to or characterized by onomatopoeia [syn:
           {onomatopoeic}, {onomatopoetic}]
    2: (of words) formed in imitation of a natural sound;
       "onomatopoeic words are imitative of noises"; "it was
       independently developed in more than one place as an
       onomatopoetic term"- Harry Hoijer [syn: {echoic},
       {imitative}, {onomatopoeic}, {onomatopoeical},
       {onomatopoetic}] [ant: {nonechoic}]

from The Collaborative International Dictionary of English v.0.48

Onomatopoetic \On`o*mat`o*po*et"ic\, a.
   Of or pertaining to onomatopoeia; characterized by
   onomatopoeia; imitative; as, an onomatopoetic writer or word.
   --Earle.
   [1913 Webster]