Webster's English Dictionary

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evolve

evolve \i-'va:lv, -'vo.lv\ \-m*nt\ vb [L evolvere to unroll, fr. e- + 
   volvere to roll] 1: to give off : EMIT  2a: DERIVE, EDUCE  2b: to work out 
   : DEVELOP  2c: to produce by natural evolutionary processes  : to undergo 
   evolutionary change  - evolvement n