phosphorus   (TTS Sound)

The noun phosphorus has 2 senses

• 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)


• morning star, daystar, Phosphorus, Lucifer -- (a planet (usually Venus) seen just before sunrise in the eastern sky)