\Cor"o*nal\ (k?r"?-nal or, esp. in science, k?-r?"nal;
277), a. [L. coronalis: cf. F. coronal.]
1. Of or pertaining to a corona (in any of the senses).
         The coronal light during the eclipse is faint.
                                               --Abney.
2. Of or pertaining to a king's crown, or coronation.
         The law and his coronal oath require his undeniable
         assent to what laws the Parliament agree upon.
                                               --Milton.
3. Of or pertaining to the top of the head or skull.
4. (Zo["o]l.) Of or pertaining to the shell of a sea urchin.
{Coronal suture} (Anat.), a suture extending across the skull
   between the parietal and frontal bones; the
   fronto-parietal suture.

\Cor"o*nal\, n.
1. A crown; wreath; garland. --Spenser.
2. The frontal bone, over which the ancients wore their
   coron[ae] or garlands. --Hooper.