| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a.c. | |
| —abbreviation for | |
| (in prescriptions) ante cibum | |
| [Latin: before meals] | |
| a.c. Latin ante cibum (before meals) |
A.C.
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