lanthanon

Science Dictionary
lanthanide   (lān'thə-nīd')  Pronunciation Key 
Any of a series of 15 naturally occurring metallic elements. The lanthanides include elements having atomic numbers 57 (lanthanum) through 71 (lutetium). They are grouped apart from the rest of the elements in the periodic table because they all behave in a similar way in chemical reactions. Also called rare-earth element. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Explore Dictionary.com
Previous Definition: lanthanide
Next Definition: lanthanum
Words Near: lanthanon
More from Thesaurus.com
Synonyms and Antonyms for lanthanon
More from Reference.com
Search for articles containing lanthanon
More from Dictionary.com Translator
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;