lanthanide series

American  

noun

Chemistry.

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

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lanthanide series British  

noun

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

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Etymology

Origin of lanthanide series

First recorded in 1940–45

Example Sentences

Notably, the team provided the first demonstration of a feature of lanthanide contraction in solution for the whole lanthanide series, including promethium, atomic number 61.

From Science Daily