Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun atomic_number_15

1 sense of atomic number 15

Sense 1
phosphorus, P, atomic number 15 -- (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)
       => chemical element, element -- (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)