The Collaborative International Dictionary of English v.0.48:

Premeditate \Pre*med"i*tate\, v. t. [imp. & p. p. Premeditated
   (-t[=a]`t?d); p. pr. & vb. n. Premeditating.] [L.
   praemeditatus, p. p. of praemeditari; prae before + meditari
   to meditate. See Meditate.]
   To think on, and revolve in the mind, beforehand; to contrive
   and design previously; as, to premeditate robbery.
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         With words premeditated thus he said.    --Dryden.
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