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Definition of Atomic number 15
1. Noun. A multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms.
Exact synonyms: P, Phosphorus
Generic synonyms: Chemical Element, Element
Substance meronyms: Apatite
Derivative terms: Phosphoric, Phosphorous
Generic synonyms: Chemical Element, Element
Substance meronyms: Apatite
Derivative terms: Phosphoric, Phosphorous