[with obj.][usu. as adj. passivated]make (a metal or other substance) unreactive by altering the surface layer or coating the surface with a thin inert layer 使(金属等)钝化,使惰性化 ■(Electronics)coat (a semiconductor) with inert material to protect it from contamination (电子)给(半导体)镀上惰性物质(使之免受污染)