A former region in France; since 2016, part of the region of Grand Est.

The state or quality of being ardent.

(geology) A destructive, turbulent, incandescent mass of particles enveloped in gas produced by the eruption of a volcano

plural of ardency

Intensity of feelings. / Intensity of devotion. / Intensity of heat or burning. / Intensity of light.

A hilly forested region between Belgium, France, Luxembourg, Germany / Ellipsis of Ardennes Forest / Ardenne Forest / Forest of Ardennes. / A range of hills in the Ardennes-Eiffel mountainous range

(mineralogy) A yellowish orthorhombic mineral that is a mixed silicate and vanadate, and may also have arsenate.

plural of ardennite