ENGLISH
REFERENCE

phosphorus

n. uncountable
C1 Advanced US //ˈfɑsfɝəs// UK //fˈɒsfɔːɹəs// phos·pho·rus Archaic

n. a chemical element that is very reactive and glows in the dark. It is essential for life and is found in things like bones, DNA, and matches.

n. a highly reactive non-metallic element with the atomic number 15. In its white form, it is poisonous and spontaneously ignites in air; in its red form, it is used in the manufacture of safety matches.


SIMPLE

Phosphorus is an essential mineral for healthy bones.

CONTEXTUAL

Farmers often add phosphorus to their soil because it helps crops grow strong roots and produce fruit.

COMPLEX

The excessive runoff of phosphorus from agricultural fertilizers into local waterways can lead to harmful algal blooms that deplete oxygen levels and kill aquatic life.

Synonyms
Origin

From Latinised Greek Phosphorus, from Ancient Greek Φωσφόρος (Phōsphóros, “the bearer of light”), from φῶς (phôs, “light”) + φέρω (phérō, “I bear, carry”).

Usage

Usually uncountable when referring to the chemical element; can be countable when referring to specific isotopes or chemical varieties.

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