NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,812 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

phosphoric acid
(fos-FOR-ik A-sid)
An acid that contains phosphorus and is used in medicine and dentistry. It is also used to remove rust. A dilute form of phosphoric acid is used to flavor soft drinks.