phosphorous

== English == === Etymology === From phosphorus + -ous. === Pronunciation === Homophone: phosphorus === Adjective === phosphorous (not comparable) (chemistry) Of or pertaining to phosphorus. Synonym: phosphoric Resembling phosphorus. Synonym: phosphoric (chemistry) Of, relating to, or containing trivalent phosphorus. ==== Usage notes ==== Do not confuse phosphorous (adjective) with phosphorus (noun). ==== Derived terms ==== ==== Related terms ==== phosphoric phosphorus ==== Translations ==== ==== See also ==== phosphoric === Noun === phosphorous (uncountable) (proscribed) Misspelling of phosphorus.