| OP | a style of abstractionism popular in the 1960s |
|---|---|
| OP | the process of becoming cloudy or opaque |
| OP | become opaque |
| OP | make opaque |
| OP | the quality of being opaque to a degree |
| OP | incomprehensibility resulting from obscurity of meaning |
| OP | the phenomenon of not permitting the passage of electromagnetic radiation |
| OP | large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean |
| OP | a translucent mineral consisting of hydrated silica of variable color |
| OP | a milky white translucent or opaque glass |
| OP | exhibit a play of colors like that of an opal |
| OP | reflect light or colors like an opal |