Rotating image of human brain, illustrating the lateral sulcus in the brain. The term sulcus (pl. sulci) is a general descriptive term for a furrow or fissure.
Halo may refer to: 1  Halo (religious iconography), a glow or ring of light around a head or person in art. 2  Halo (series), video game franchise.
A halo indicates cirrus clouds are moving overhead, and cirrus clouds often precede the warm sector of a winter storm, which is where steady precipitation occurs. With that saâ¦id, it is no guarantee that it will happen, and precipitation may be in the form of ice or rain as well.