retroduce
/ˌrɛtrə(ʊ)ˈdjuːs/ /ˌrɛtrə(ʊ)ˈdʒuːs/verb
[with object] With to: to explain (observed facts or phenomena) by inferring a cause or source; also without object.
Origin
Mid 17th century (in an earlier sense). From classical Latin retrōdūcere (also retrō dūcere) to drag backward, to extend (something) further back from retrō + dūcere to lead.