arc, arc-, arci-, arch, arch-

(Latin: arcus, bow, a curved structure)

arc (AHRK)
A curved line, arch, crescent, bow: "The rainbow formed a beautiful arc in the sky."

Both arc and arch come from the Latin element arcus, "bow". Archery and archer also come from this same Latin element.

arc lamp
An electric light in which a current produces light when an arc traverses the gap between two incandescent electrodes in a container filled with a gas; such as, xenon.

Arc lamps are used to produce intense light; such as, in spotlights and to produce heat for welding.

arcade (s) (noun), arcades (pl)
1. An arched, roofed building or part of a building.
2. A series of arches supported by columns, piers, or pillars.
3. A roofed passage way or lane, especially one with shops on either side.
4. A commercial establishment featuring rows of coin-operated games.
arcaded
1. Decorated with an arcade: "Our apartment has an arcaded entryway."
2. Housed in an arcade: "Our town finally has its own arcaded shops."
arch
1. A structure, especially one of masonry, for the curved, pointed, or flat upper edge of an open space and supporting the weight above it, as in a bridge or doorway.
2. A structure; such as, a freestanding monument, shaped like an inverted U.
3. A curve with the ends down and the middle up; "She moved her eyebrows in a raised arch."
4. A body organ or structure having a curved or bowlike appearance, especially either of two arched sections of the physical structure of the foot.
5. To form an arch or arch-like curve.
arched
1. Forming an arch or a curve like that of an arch.
2. Provided, made, or covered with an arch.
archer
Someone who shoots with a bow and arrow.
archery
1. The art, sport, or skill of shooting with a bow and arrow.
2. The equipment of an archer.
architrave
1. A beam resting directly on columns; epistyle.
2. A moulding at the head and the sides of windows or doorways.
archivolt
A curved molding on the face of an arch.
archway
1. An entrance or passage under an arch.
2. A covering or enclosing arch.
archwise
In the form of an arch.
arciform
1. Formed in the shape of an arc.
2. Forming or resembling an arch.
arcing, arced
1. To form an arc.
2. To move or seem to move in a curved path: "We observed the rainbow arcing across the sky."
arcminute
A unit of angular distance equal to a 60th of a degree.