A-a

See also: Appendix:Variations of "aa"

English

Adjective

A-a (not comparable)

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

German

Noun

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

  1. alternative spelling of Aa (feces, poop)

Declension