Ped·i·pal·pi n. pl.  Zool. A division of Arachnida, including the whip scorpions (Thelyphonus) and allied forms.  Sometimes used in a wider sense to include also the true scorpions.
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  Ped·i·pal·pus n.; pl. Pedipalpi   Zool. One of the second pair of mouth organs of arachnids.  In some they are leglike, but in others, as the scorpion, they terminate in a claw.
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  Pedipalpi
       n : whip scorpions [syn: order Pedipalpi, Uropygi, order
           Uropygi]