A-a

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English[edit]

Adjective[edit]

A-a (not comparable)

  1. (physiology) Initialism of alveolar-arterial.
    A-a gradient

German[edit]

Noun[edit]

A-a n or f (strong, genitive A-as or A-a, no plural)

  1. Alternative spelling of Aa (feces, poop)

Declension[edit]