Definition of phosphine in English:


Syllabification: phos·phine
Pronunciation: /ˈfäsfēn


  • A colorless foul-smelling gaseous compound of phosphorus and hydrogen, analogous to ammonia, widely used as an insecticidal fumigant in agricultural products.
    • Chemical formula: PH3. It forms salts containing the phosphonium ion, PH4+
    More example sentences
    • The two main alternatives for methyl bromide in pesticides are ‘integrated commodity management’ and fumigation, which uses phosphine and carbon dioxide to kill the pests.
    • The inorganic compound phosphine is very similar to ammonia in its substitution reactions.
    • Since the explosion yesterday morning, which jammed a main cargo door shut, gases including hydrogen, phosphine and arsine, a derivative of arsenic, have started venting from the cargo hold.


late 19th century: from phospho- 'relating to phosphorus' + -ine4, on the pattern of amine.

More definitions of phosphine

Definition of phosphine in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
(in science fiction) navigation in outer space