A-

Look up a- in Wiktionary, the free dictionary.

A- or a- may refer to:

A-hyphen

• A- (plane)
  , a U.S. military aircraft prefix
• Privative a
  , a prefix expressing negation
• Copulative a, a prefix expressing unification

A-minus

• A−, a blood type in the ABO blood group system
• A− (grade)
  , an educational grade in the letter-grading system, above B+ but below A

See also

• Ā

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