What is the definition of Aa? | Dictionary.net

AA

\ˈɑː], \ˈɑː], \ˈɑː]\

Definitions of AA

1898 - Warner's pocket medical dictionary of today.
1916 - Appleton's medical dictionary

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From ana, meaning of each.

1898 - Warner's pocket medical dictionary of today.
By William R. Warner

Used in prescription writing following the names of two or more ingredients to signify of each. [Gr.]
See AA.

1916 - Appleton's medical dictionary
By Smith Ely Jelliffe

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ammonium chlorid

Sal ammoniac, NH4CI, found native volcanic regions small quantities sea water and formed artificially by the direct combination of ammonia hydrochloric acid gas. Used in bronchitis.

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