The overhanging vertical member of a cornice.

See <<solar corona>>

1. An appendage or series of fused appendages between the corolla and stamens of some flowers.

2. The region where stem and root of a seed plant merge. Also known as crown.

See <<corona discharge>>

A mineral zone that is usually radial about another mineral or at the area between two minerals. Also known as kelyphite.

1. The anterior ring of cilia in rotifers.

2. A sea urchin test.

3. The calyx and arms of a crinoid.

An area sometimes surrounding the nugget at the faying surfaces of a spot weld which provides a degree of bond strength.

A set of one or more prismatically colored rings of small radii, concentrically surrounding the disk of the sun, moon, or other luminary when veiled by a thin cloud; due to diffraction by numerous waterdrops.

An annular zone of minerals that is disposed either around another mineral or at the contact between two minerals.