| 释义 |
halo of 46° halo of 46°[′hā·lō əv ¦fȯrd·ē′siks di′grēz] (optics) A halo phenomenon in the form of a prismatically colored circle or incomplete arc thereof, centered on the sun or moon and having an angular radius of about 46°; the coloration is red on the inner edge to blue on the outer edge. |