| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| pta | |
| —symbol for | |
| peseta | |
| PTA | |
| —abbreviation for | |
| Parent-Teacher Association | |
PTA abbr.
plasma thromboplastin antecedent
PTA
|
| pta. peseta |