phosphorus

phosphorus

See also: Phosphorus

English

Chemical element (edit)
P
Atomic number 15
phosphorus
Classification data
Period 3
Group 15
Block p-block
Class nonmetal
Previous: ← silicon (Si)
Next: sulfur (S) →
English Wikipedia article on Phosphorus

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 (noun) with phosphorous (adjective).

    Derived terms

    Translations

    See also

    Latin

    Chemical element (edit)
    P
    Atomic number 15
    phosphorus
    Classification data
    Period 3
    Group 15
    Block p-block
    Class nonmetal
    Previous: ← silicium (Si)
    Next: sulfur, sulphur (S) →

    Etymology

      Borrowed 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