English Dictionary

ATOMIC NUMBER 57

 Dictionary entry overview: What does atomic number 57 mean? 

ATOMIC NUMBER 57 (noun)
  The noun ATOMIC NUMBER 57 has 1 sense:

1. a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earthplay

  Familiarity information: ATOMIC NUMBER 57 used as a noun is very rare.


 Dictionary entry details 


ATOMIC NUMBER 57 (noun)


Sense 1

Meaning:

A white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth

Classified under:

Nouns denoting substances

Synonyms:

atomic number 57; La; lanthanum

Hypernyms ("atomic number 57" is a kind of...):

metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)


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