phosphorus

silicon$\longleftarrow$ 15 $\longrightarrow$sulfur or sulphur

Pronunciation

• IPA ^(key): /ˈfɒsfərəs/

• Audio (US)

  (file)

• Hyphenation: phos‧pho‧rus

Noun

Singular phosphorus

Plural none

1. Phosphorus is a chemical element that has an atomic number of 15 and the symbol P.

   Phosphorus is used to make matches.

   We need to eat foods which contain phosphorus to stay healthy.