To deduce is defined as to come up with an answer by logic or by putting pieces of information together.(verb)
An example of deduce is when police figure out who the killer is by looking at information they obtain.
See deduce in Webster's New World College Dictionary
See deduce in American Heritage Dictionary 4
transitive verb de·duced, de·duc·ing, de·duc·es
Origin: Middle English deducen
Origin: , from Latin dēdūcere, to lead away or down
Origin: : dē-, de-
Origin: + dūcere, to lead; see deuk- in Indo-European roots.
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