An Etymological Dictionary of Astronomy and Astrophysics

A vault, having a circular plan and usually in the form of a portion of a sphere, that shelters an optical telescope.
Geology: Rounded volcanic structure produced by eruption or intrusion of viscous high-silica magma.

An uplift that is round or elliptical in map view with beds dipping away in all directions from a central point.

Etymology (EN): From Fr. dôme, from Gk. doma “house, housetop,” related to domos “house”
(PIE *domo-/*domu- “house, household;” cf. Av. dam-, dəmāna- “house,” Skt. dám- “house,” Gk. doma “house,”
L. domus “house,” Rus. dom “house,” Lith. dimstis “enclosed court, property,” O.E. timber “building, structure”).

Etymology (PE): Mid.Pers. gumbat, gônbat.