arc

arc Definition

arc (ärk)

noun

Historical the part of a circle that is the apparent path of a heavenly body above and below the horizon
a bowlike curved line or object
Elec. the band of sparks or incandescent light formed when an electric discharge is conducted from one electrode or conducting surface to another, characterized by relatively high current and low potential difference between electrodes
Geom.
1. any part of a curve, esp. of a circle
2. the angular measurement of this

Etymology: ME ark < OFr arc < L arcus, a bow, arch < IE base *arqu-, bowed, curved > arrow

adjective

designating an inverse trigonometric function arc sine x is an angle whose sine is x

intransitive verb arced or arcked, arc′·ing or arck′·ing

Arc Definition

Arc

ARC¹ Definition

ARC (ärk)

noun

ARC² Definition

ARC

American Red Cross

arc Synonyms

arch, curve, segment of a circle; see arch, curve 1.

arc Usage Examples

Preposition: of

infinity: TheDalek079 20-06-2006, 20:06 Doing the City of Death in Paris was quite successful and the Arc of Infinity featured Amsterdam.
circle: He used arcs of great circles instead of arcs of parallel circles on the sphere.

Converse of object

Adjective modifier

supralateral: The supralateral arc, like the related circumzenithal arc, only forms at solar altitudes below 32° .
tangent: Upper and lower tangent arcs and a faint 22º halo.
reflex: The Reflex Arc The three types of neurones are arranged in circuits and networks, the simplest of which is the reflex arc.
circumzenithal: The circumzenithal arc is the most beautiful of all the halos.
infralateral: The two dark arcs at the drawing's base are no doubt colorful infralateral arcs from horizontal column crystals.
elliptical: XDrawArc draws a single circular or elliptical arc, and XDrawArcs draws multiple circular or elliptical arcs.

Modifies a noun

rectifier: Photo: Ventilation and lift plant room showing mercury arc rectifier.
welder: I will definitely need to use the carbon arc brazing attachment on my arc welder for some fine touches on outer wing.
magmatism: The overarching theme of the two studies is how much arc magmatism contributes to continental growth.
furnace: Inside number 1 foundry was an electric arc furnace and a high frequency furnace.
it: ARC iT are on hand every hour of the day, every day of the year.
lamp: We merely replaced the arc lamp we had used until then with another arc lamp three times as strong.

Noun used with modifier

mercury: Excitation is via one or more laser sources, or via mercury arc illumination.
linkbase: The application interpreting an initial linkbase arc may choose to limit the number of steps processed in the chain.
plasma: This is achieved by using a plasma arc, where energy is released by an electrical discharge in an inert atmosphere.
story: Details of the initial story arc, for example.
carbon: Carbon arcs shielded from the weather by a glass cover were used to create tramcar flashes.

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