The Collaborative International Dictionary of English v.0.48:

Dispread \Dis*pread"\, v. t. [Pref. dis- + spread.]
   To spread abroad, or different ways; to spread apart; to
   open; as, the sun dispreads his beams. --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dispread \Dis*pread"\, v. i.
   To extend or expand itself. [R.]
   [1913 Webster]

         While tyrant Heat, dispreading through the sky.
                                                  --Thomson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

dispread
    v 1: spread abroad or out; "The sun dispread its beams"