actinide

• Существительное, обозначающее любой из ряда радиоактивных металлических элементов с атомными номерами от 89 до 103.

A noun referring to any of a series of radioactive metallic elements with atomic numbers ranging from 89 to 103.

1. Radioactive element seriesC2formalscientific

   Any of a series of radioactive metallic elements with atomic numbers ranging from 89 (actinium) to 103 (lawrencium).

   Актинид

   • Uranium and plutonium are well-known actinides used in nuclear reactors.
   • The actinide series is part of the periodic table's f-block.
   • Scientists study actinides for their unique radioactive properties.

   Синонимыactinoid