phosphorus

See also: Phosphorus

English

Chemical element
P
Previous: silicon (Si)
Next: sulfur (S)

Etymology

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

Pronunciation

  • (Received Pronunciation) enPR: fŏsʹfə-rəs, fŏsʹfrəs, IPA(key): /ˈfɒs.fə.ɹəs/, /ˈfɒs.fɹəs/
  • (US) enPR: fäsʹfər-əs, IPA(key): /ˈfɑs.fɚ.əs/
  • Audio (General American):(file)
  • Audio (US):(file)
  • Homophones: phosphorous, Phosphorus

Noun

phosphorus (countable and uncountable, plural phosphoruses or phosphori)

  1. (chemistry) a chemical element (symbol P) with an atomic number of 15, that exists in several allotropic forms.
    • For quotations using this term, see Citations:phosphorus.
  2. (obsolete) any substance exhibiting phosphorescence; a phosphor.
    • For quotations using this term, see Citations:phosphorus.

Usage notes

  • Do not confuse phosphorus with phosphorous, which is an adjective.

Derived terms

Translations

See also

Latin

Chemical element
P
Previous: silicium (Si)
Next: sulfur (S)

Etymology

From Ancient Greek φωσφόρος (phōsphóros, light-bearing).

Pronunciation

Noun

phōsphorus m (genitive phōsphorī); second declension

  1. (New Latin, chemistry) phosphorus

Declension

Second-declension noun.

singular plural
nominative phōsphorus phōsphorī
genitive phōsphorī phōsphorōrum
dative phōsphorō phōsphorīs
accusative phōsphorum phōsphorōs
ablative phōsphorō phōsphorīs
vocative phōsphore phōsphorī

Descendants

  • French: phosphore
  • Galician: fósforo
  • Italian: fosforo
  • Portuguese: fósforo
  • Romanian: fosfor
  • Sicilian: pòspuru
  • Spanish: fósforo
  • Venetan: fòsforo