The Collaborative International Dictionary of English v.0.48:

Saltigrade \Sal"ti*grade\, a. [L. saltus a leap + gradi to walk,
   go: cf. F. saltigrade.] (Zool.)
   Having feet or legs formed for leaping.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Saltigrade \Sal"ti*grade\, n. (Zool.)
   One of the Saltigradae, a tribe of spiders which leap to
   seize their prey.
   [1913 Webster]