In semiotics, transduction is the translation from a sign or concept from one field of knowledge to a different one, involving a transformation that keeps an original conection in its phenomenological deepest level. It differs from "traduction" with regard to its necessity of adaptation.

In biophysics, transduction is the conveyance of energy from one electron (a donor) to another (a receptor), at the same time that the class of energy changes.

In cell biology, signal transduction is any process by which a cell converts one kind of signal or stimulus into another.

In developmental psychology, transduction is reasoning from specific cases to specific cases, typically employed by children.

In engineering, transduction is a process that converts one type of energy or signal to another. A device that does this is called a transducer.

In genetics, transduction is the transfer of viral, bacterial, or both bacterial and viral DNA from one cell to another via bacteriophage.

In machine learning, transduction is directly drawing conclusions about new data from previous data, without constructing a model.

In physiology, transduction is transportation of stimuli to the nervous system.