The Collaborative International Dictionary of English v.0.48:

Anapestic \An`a*pes"tic\, a. [L. anapaesticus, Gr.
   'anapaistiko`s.]
   Pertaining to an anapest; consisting of an anapests; as, an
   anapestic meter, foot, verse. -- n. Anapestic measure or
   verse.
   [1913 Webster]

WordNet (r) 3.0 (2006):

anapestic
    adj 1: (of a metric foot) characterized by two short syllables
           followed by a long one [syn: anapestic, anapaestic]