phosphorus

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  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
  2. noun a planet (usually Venus) seen just before sunrise in the eastern sky

Etymology

Borrowed from Latin phōsphorus, from Ancient Greek φωσφόρος (phōsphóros, “the bearer of light”), from φῶς (phôs, “light”) + φέρω (phérō, “to bear, carry”).

In classic literature

Synonyms

P, atomic number 15

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