Definitions of corona

  1. the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
  2. a long cigar with blunt ends
  3. ( botany) the trumpet shaped or cup shaped outgrowth of the corolla of a daffodil or narcissus flower
  4. A crown or garland bestowed among the Romans as a reward for distinguished services.
  5. The projecting part of a Classic cornice, the under side of which is cut with a recess or channel so as to form a drip. See Illust. of Column.
  6. The upper surface of some part, as of a tooth or the skull; a crown.
  7. The shelly skeleton of a sea urchin.
  8. A peculiar luminous appearance, or aureola, which surrounds the sun, and which is seen only when the sun is totally eclipsed by the moon.
  9. Any crownlike appendage at the top of an organ.
  10. A circle, usually colored, seen in peculiar states of the atmosphere around and close to a luminous body, as the sun or moon.
  11. A peculiar phase of the aurora borealis, formed by the concentration or convergence of luminous beams around the point in the heavens indicated by the direction of the dipping needle.
  12. A crown or circlet suspended from the roof or vaulting of churches, to hold tapers lighted on solemn occasions. It is sometimes formed of double or triple circlets, arranged pyramidically. Called also corona lucis.
  13. A character [/] called the pause or hold.
  14. A crown; a halo surrounding heavenly bodies.
  15. A crown or garland; a luminous circle; halo.
  16. A large flat member of a cornice, usually of considerable projection, to carry off the rain that falls on it; the upper surface of the molar teeth or grinders; the circumference or margin of a radiated compound flower; a halo or luminous circle around the sun, moon, or stars; a crown, sometimes of triple circlets, suspended from a roof to hold tapers, which are lighted on solemn occasions; among the Romans, a crown bestowed for distinguished services.
  17. The flat projecting part of a cornice; a drip; a halo or luminous circle round the sun, moon, or stars; in anat., the upper surface of the molar teeth; in bot., the circumference or margin of a radiated compound flower.
  18. A cup- shaped body formed by the union of scales on the perianth leaves at the junction of claw and limb; the theca and arms of a Crinoid; the ciliated disc of certain animals; the head or upper portion of any structure.
  19. Coronal.