geçirici

Geçirici is a Turkish term derived from the verb geçirmek, meaning to let pass, with the agentive suffix -ici. In Turkish technical vocabulary, geçirici describes an object or material that allows something to pass through it or across it, as opposed to blocking or attenuating it. The exact sense depends on the context.

In science and engineering, geçirici can refer to a component, medium, or material that transmits or conducts a phenomenon—such as light, heat, or electricity—through itself or from one side to another. In optics, geçirici media are those that transmit light rather than absorb or reflect it; in electrical engineering, a geçirici element is a part that permits the propagation of an electrical signal. In materials science, the term can describe permeable or permeating substances—materials with sufficient permeability to allow a given substance to permeate.

The term is used descriptively rather than as a formal designation; there is not always a fixed, single technical definition, and the precise meaning is defined by the discipline and the accompanying qualifiers (for example, geçirici katman, geçirici madde, or geçirici filtre). Some Turkish texts may prefer more specific terms such as geçirgen, ileten, or geçirici özellik depending on whether the focus is on permeability, conductivity, or transmissivity of a particular phenomenon.

See also: permeable, transmissive, conductor, filter, medium.