(hā′lō) noun plural ·los or ·loes
1. Meteorol. A luminous circle around the sun or the moon, caused by the refraction of light passing through ice crystals floating in the air.
2. A nimbus; a radiance encircling the head in portrayals of a sacred personage.
3. The ideal brightness with which imagination surrounds an object of affection or sentiment.
—v.t. To enclose in a halo.
—v.i. To form a halo. [<L <Gk. halos a circular threshing floor]

1. The sea; of or related to the sea: halophyte.
2. Related to a halogen. Also, before vowels, hal-, as in haloid. [<Gk. hals, halos salt, the sea]