Dictionary

phosphorous acid

noun

Definition of PHOSPHOROUS ACID

:  a deliquescent crystalline acid H3PO3 used especially as a reducing agent and in making phosphites

First Known Use of PHOSPHOROUS ACID

1788

phosphorous acid

noun    (Medical Dictionary)

Medical Definition of PHOSPHOROUS ACID

:  a deliquescent crystalline acid H3PO3 used especially as a reducing agent and in making phosphites

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