[1] : The Collaborative International Dictionary of English v.0.48

invoke \invoke"\, v. t. imp.  p. p. invoked; p. pr.  vb.
   n. invoking. f. invoquer, l. invocare; pref. in- in, on +
   vocare to call, fr. vox voice. see voice, and cf.
   invocate.
   to call on for aid or protection; to invite earnestly or
   solemnly; to summon; to address in prayer; to solicit or
   demand by invocation; to implore; as, to invoke the supreme
   being, or to invoke his and blessing.
   1913 webster

         go, my dread lord, to your great grandsire's tomb, . .
         .
         invoke his warlike spirit.               --shak.
   1913 webster
see also:
invoked invoking voice invocate 

[2] : WordNet (r) 2.0

invoke
     v 1: evoke or call forth, with or as if by magic; "raise the
          specter of unemployment"; "he conjured wild birds in the
          air"; "stir a disturbance"; "call down the spirits from
          the mountain" syn: raise, conjure, conjure up, evoke,
           stir, call down, arouse, bring up, put forward,
           call forth
     2: cite as an authority; resort to; "he invoked the law that
        would save him"; "i appealed to the law of 1900"; "she
        invoked an ancient law" syn: appeal
     3: request earnestly something from somebody; ask for aid or
        protection; "appeal to somebody for help"; "invoke god in
        times of trouble" syn: appeal
see also:
raise conjure conjure up evoke stir call down 
arouse bring up put forward call forth appeal 

[3] : Moby Thesaurus II by Grady Ward, 1.0

97 moby thesaurus words for "invoke":
   accost, address, adjure, apostrophize, appeal, appeal to, approach,
   beg, beseech, bespeak, bid come, buttonhole, call, call away,
   call back, call for, call for help, call forth, call in, call on,
   call out, call to, call together, call up, call up spirits,
   call upon, cite, clamor for, commune with god, conjure, conjure up,
   conjure up spirits, convene, convoke, crave, cross-refer,
   cross-reference, cry for, cry on, cry to, demand,
   direct attention to, effect, entreat, evoke, give thanks, greet,
   hail, halloo, impetrate, implement, implore, importune, imprecate,
   indent, kneel to, make a cross-reference, make reference to,
   make supplication, muster, muster up, obtest, offer a prayer,
   order up, page, petition, plead, plead for, pray, pray over,
   preconize, raise, raise ghosts, recall, recite the rosary,
   refer to, reference, requisition, return thanks, run to, salute,
   say grace, send after, send for, serve, speak, speak fair,
   speak to, subpoena, summon, summon forth, summon spirits,
   summon up, summons, supplicate, take aside, talk to

Invoke >> I Words
Invoke, definition of term: Invoke
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