The Collaborative International Dictionary of English v.0.48:

Colliquate \Col"li*quate\, v. t. & i. [imp. & p. p.
   Colliquated; p. pr. & vb. n. Colliquating.] [Pref. col- +
   L. liquare, liquatum, to melt.]
   To change from solid to fluid; to make or become liquid; to
   melt. [Obs.]
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         The ore of it is colliquated by the violence of the
         fire.                                    --Boyle.
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         [Ice] will colliquate in water or warm oil. --Sir T.
                                                  Browne.
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