| Office of Price Stabilization. |
| a style of abstract art in which lines, forms, and space are organized in such a way as to provide optical illusions of an ambiguous nature, as alternately advancing and receding squares on a flat surface. |
OPS
1.
2.
3.
(2003-04-05)
| ops Ordered to be Printed Senate |
| OPS Ophthalmic Photographers' Society |