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Meaning of a/a | Babel Free

Noun CEFR C2

Definitions

  1. Initialism of antiaircraft.
    abbreviation, alt-of, initialism
  2. Arterial to alveolar oxygen ratio.
  3. Initialism of agnostics/atheists.
    abbreviation, alt-of, initialism

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

A/B test A/B testing A/B/O A/C A/N a/o

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