1. (noun) 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
Synonyms: daystar, atomic number 15, phosphorus, morning star
2. (noun) morning star, daystar, Phosphorus, Lucifer
a planet (usually Venus) seen just before sunrise in the eastern sky
Synonyms: daystar, the Tempter, atomic number 15, morning star, match, friction match
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