ATOMIC NUMBER 4

 Dictionary entry overview: What does atomic number 4 mean? 

• ATOMIC NUMBER 4 (noun)
  The noun ATOMIC NUMBER 4 has 1 sense:

1. a light strong brittle grey toxic bivalent metallic element

  Familiarity information: ATOMIC NUMBER 4 used as a noun is very rare.

 Dictionary entry details 

• ATOMIC NUMBER 4 (noun)

Sense 1

Meaning:

A light strong brittle grey toxic bivalent metallic element

Classified under:

Nouns denoting substances

Synonyms:

atomic number 4; Be; beryllium; glucinium

Hypernyms ("atomic number 4" 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.)

Holonyms ("atomic number 4" is a substance of...):

beryl (the chief source of beryllium; colored transparent varieties are valued as gems)

chrysoberyl (a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone)

gadolinite; ytterbite (a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium)

 Context examples 

AN element with atomic symbol Be, atomic number 4, and atomic weight 9.01

(Beryllium, NCI Thesaurus)