Derived from the Latin ducere, meaning "to lead," a person who deduces something is "leading" their mind from one idea to the next.

What is deducing in science?

To deduce is defined as to come up with an answer by logic or by putting pieces of information together. ... To infer from a general principle; reason deductively. Deduced from the laws of physics that the new airplane would fly.

What kind of word is deduce?

verb (used with object), de·duced, de·duc·ing. to derive as a conclusion from something known or assumed; infer: From the evidence the detective deduced that the gardener had done it. to trace the derivation of; trace the course of: to deduce one's lineage.