lanthanide series

noun

, Chemistry.

1. the series of rare-earth elements of atomic numbers 57 through 71 (lanthanum through lutetium).

lanthanide series

noun

1. a class of 15 chemically related elements with atomic numbers from 57 (lanthanum) to 71 (lutetium)

Word History and Origins

Origin of lanthanide series¹

First recorded in 1940–45