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.

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.

3. Of or pertaining to the top of the head or skull.

4. (Zoöl.) 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 coronæ or garlands. Hooper.