noun
rare metal; minor metal
Refers to metals that are scarce in the earth's crust or produced in small quantities, often critical for high-tech industries. The term is used in economic and industrial contexts.
スマートフォンには多くのレアメタルが使われている。
Many rare metals are used in smartphones.
レアメタルの安定供給が経済安全
Stable supply of rare metals has become an issue for economic security.