Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From pedi- + palpal, after pedipalp or pedipalpus.
Definition of pedipalpal in US English:
pedipalpal
adjectiveˌpɛdɪˈpalpl
Zoology
Of or relating to a pedipalp.
Origin
Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From pedi- + palpal, after pedipalp or pedipalpus.