Prominence
Astronomy
A structure in the corona consisting of cool plasma supported by magnetic fields. In visible light, prominences appear as bright structures over the solar limb, but dark when viewed against the bright solar disk. Prominences seen on the disk are also known as filaments. Prominences may become parts of CMEs.
- — NASA Helioviewer.org Visual Glossary retrieved 2014-05-26
Weather
A term identifying cloud-like features in the solar atmosphere. The features appear as bright structures in the CORONA above the solar LIMB and as dark FILAMENTs when seen projected against the solar DISK