The Collaborative International Dictionary of English v.0.48:

Quinquedentate \Quin`que*den"tate\, Quinquedentated
\Quin`que*den"ta*ted\, a. [Quinque- + dentate, -tated: cf. F.
   quinqu['e]dent['e].]
   Five-toothed; as, a quinquedentate leaf.
   [1913 Webster]