A-
Topics referred to by the same term
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A- or a- may refer to:
Look up a- in Wiktionary, the free dictionary.
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
- A− (grade), an educational grade in the letter-grading system, above B+ but below A