Merriam-Webster's Collegiate® Dictionary, 11th Edition
DOME
I. noun
Etymology: French, Italian, & Latin; French dôme dome, cathedral, from Italian duomo cathedral, from Medieval Latin domus church, from Latin, house; akin to Greek domos house, Sanskrit dam
Date: 1513
a stately building ; mansion , a large hemispherical roof or ceiling, a natural formation or structure that resembles the dome or cupola of a building, a form of crystal composed of planes parallel to a lateral axis that meet above in a horizontal edge like a roof, an upward fold in rock whose sides dip uniformly in all directions, a roofed sports stadium, a person's head, domal adjective
II. verb (domed; doming)
Date: 1876
transitive verb to cover with a dome, to form into a dome, intransitive verb to swell upward or outward like a dome