Synonyms for beryllium in the sense of this definition

• atomic number 4
• be
• glucinium

(beryllium is a kind of ...) any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.

• metal
• metallic element

(... is made of the substance beryllium) the chief source of beryllium; colored transparent varieties are valued as gems

• beryl

(... is made of the substance beryllium) a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone

• chrysoberyl

(... is made of the substance beryllium) a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium

• gadolinite
• ytterbite