:10
:09
:08
:07
:06
:05
:04
:03
:02
:01
| a National Weather Service warning of winds having speeds of 48 knots (55 mph, 25 m/sec) or greater |
| any instrument that measures atmospheric pressure |
halo ha·lo (hā'lō)
n. pl. ha·los or ha·loes
A reddish yellow ring surrounding the optic disk, caused by an expansion of the scleral ring that makes the deeper structures visible.
Glaucomatous halo.
A ring of light surrounding a luminous body.
halo- or hal-
pref.
Salt: halophilic.
Halogen: halide.
| halo (hā'lō) Pronunciation Key
A hazy ring of colored light in the sky around the Sun, Moon, or a similar bright object. A halo is caused by the reflection and refraction of light through atmospheric ice crystals. |