grain refiner, growth-hindering agent, grain inhibitor, grain-growth inhibitor, grain modifier
terakasvu takistamise (pidurdamise) eesmärgil sulametalli sisseviidav materjal (vt terakasv, modifikaator; vrd inokulaator), a material added to a molten metal to induce a finer-than-normal grain size in the final structure (see: grain growth, modifier; compare: inoculant)
