diffract

from WordNet (r) 3.0 (2006)

diffract
    v 1: undergo diffraction; "laser light diffracts electrons"

from The Collaborative International Dictionary of English v.0.48

Diffract \Dif*fract"\, v. t. [imp. & p. p. {Diffracted}; p. pr.
   & vb. n. {Diffracting}.] [L. diffractus, p. p. of diffringere
   to break in pieces; dif- = dis- + frangere to break. See
   {Fracture}.]
   To break or separate into parts; to deflect, or decompose by
   deflection, a? rays of light.
   [1913 Webster]