Definitions for "Plage"
A region; country.
Patchy brightenings on the solar disk seen in H-Alpha light, usually found in or near active regions, which can last for several days. Plage is irregular in shape and variable in brightness, marking areas of nearly vertical emerging or reconnecting magnetic field lines (from French word for "beach" with the "a" being a short one).
bright, disturbed area of the solar surface.
a smooth area just below the apiculus found on some rough spores
A plage is a clear, unornamented area on the basal area of an otherwise ornamented spore. Characteristic of spores from the euagaric genus Galerina.