läbimos

Läbimos is a term encountered in Estonian-language technical and academic writing to denote the property or process by which something passes completely through a barrier, container, or medium. Because it is not a single standardized concept, its precise definition depends on the discipline in which it is used. In materials science and civil engineering, läbimos is often used as a generic label for complete transmission of a quantity—such as a liquid, gas, light, or heat—through a material, as opposed to partial permeation or surface interaction. In biology or pharmacology, the word may be employed to describe the translocation of substances across membranes or tissues, again emphasizing full passage rather than surface adsorption.

Measurements labeled as läbimos typically report a extent of transmission as a fraction or rate over a defined thickness or time, and are accompanied by conditions such as temperature, pressure, or concentration gradient. Because of its variable usage, authors usually define the term explicitly when it appears.

See also: permeability, transmittance, diffusion, osmosis, permeation, penetration.

Läbimos is not widely used as a standalone scientific term in all languages and should be interpreted in context with the author’s definitions.