English edit

Etymology edit

From phosphorus +‎ -ous.

Adjective edit

phosphorous (not comparable)

  1. (chemistry) Of or pertaining to phosphorus.
  2. Resembling phosphorus.
  3. (chemistry) Of relating to or containing trivalent phosphorus.

Usage notes edit

  • Do not confuse phosphorous with phosphorus, which is the noun.

Synonyms edit

Derived terms edit

Related terms edit

Translations edit

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See also edit

Noun edit

phosphorous (uncountable)

  1. (proscribed) Misspelling of phosphorus.
    • 1991 April 6, Steve Rose, “A Human Drama”, in Gay Community News, page 5:
      As a former civilian resident of west Beirut, bombed with American-made phosphorous and cluster bombs by the Israelis, I am outraged by this.