| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024pen•ta•prism (pen′tə priz′əm),USA pronunciation n. - Opticsa prism that has five faces, a pair of which are at 90° to each other;
a ray entering one of the pair emerges from the other at an angle of 90° to its original direction: used esp. in single-lens reflex cameras to reverse images laterally and reflect them to the viewfinder. Also, pen′ta prism′. |