from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A luminous, white, halolike area occasionally seen in the sky opposite the sun on the parhelic circle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A faint, white halo rarely seen in the sky opposite the sun on the parhelic circle
from the GNU version of the Collaborative International Dictionary of English
- n. A halo opposite the sun, consisting of a colored ring or rings around the shadow of the spectator's own head, as projected on a cloud or on an opposite fog bank.
from The Century Dictionary and Cyclopedia
- n. A solar phenomenon consisting of one or more faint luminous rings around the shadow of the head of an observer when projected at no great distance by the sun when it is near the horizon on a cloud, fog-bank, grass covered with dew, or other moist surface. It is sometimes observed in alpine and polar regions, and is due to diffraction of light.
Greek anthēlion, from neuter of anthēlios, opposite the sun : anti-, anti- + hēlios, sun; see sāwel- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
This definition is lacking an etymology or has an incomplete etymology. You can help Wiktionary by giving it a proper etymology. (Wiktionary)