What is "abductive"

a. 1 (context anatomy English) Related or pertaining to abductor muscles and their movement. (Mid 19^th century.)(R:SOED5: page=3) 2 (context logic computing English) Characterizing a logical process as being one of abduction or inference. (Early 20^th century.) 3 (context rare English) abduct, pertaining to an abduction (a kidnapping).