1

arc

noun \ ˈärk \
Updated on: 12 Nov 2017

Definition of arc

1 :the apparent path described above and below the horizon by a celestial body (such as the sun)
2 a :something arched or curved
b :a curved path
  • the arc of a fly ball
3 :a sustained luminous discharge of electricity across a gap in a circuit or between electrodes; also :arc lamp
4 :a continuous portion (as of a circle or ellipse) of a curved line
5 :degree measurement on the circumference of a circle used especially in the phrase of arc
  • 11 minutes 3 seconds of arc
6 :a continuous progression or line of development
  • a story's dramatic arc

Examples of arc in a Sentence

  1. He bent the twig into an arc.

  2. The ball floated in a high arc.

Recent Examples of arc from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arc.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of arc

Middle English ark, from Anglo-French arc bow, from Latin arcus bow, arch, arc — more at arrow

Other Electrical Engineering Terms


2

arc

verb

Definition of arc

arced play \ˈärkt\; arcing play \ˈär-kiŋ\
intransitive verb
1 :to form an electric arc (see 1arc 3)
2 :to follow an arc-shaped course
  • The ball arced across the sky.

Examples of arc in a Sentence

  1. The arrow arced through the air.

  2. A light arced across the sky.

  3. The island chain arcs from north to south.

Recent Examples of arc from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arc.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of arc

see 1arc

arc Synonyms

Other Electrical Engineering Terms


3

arc

adjective

Definition of arc

mathematics
:inverse 2 used with the trigonometric functions and hyperbolic functions

Origin and Etymology of arc

arc sine arc or angle (corresponding to the) sine (of so many degrees)


ARC

abbreviation

Definition of ARC

1 AIDS-related complex
2 American Red Cross

ARC Defined for English Language Learners

arc

noun

Definition of arc for English Language Learners

  • : a line or shape that is curved like part of a circle

  • : a brightly glowing electric current that flows across an open space between two points (such as two electrodes)


arc

verb

Definition of arc for English Language Learners

  • : to move or lie in a curving path : to follow an arc-shaped course

  • : to form an electric arc


ARC Defined for Kids

1

arc

noun \ ˈärk \

Definition of arc for Students

1 :a glowing light across a gap in an electric circuit or between electrodes
2 :a part of a curved line between any two points on it

2

arc

verb

Definition of arc for Students

arced \ˈärkt\; arcing \ˈär-kiŋ\
1 :to form an electric arc
2 :to follow a curved course
  • A missile arced across the sky.

Medical Dictionary

arc

noun \ ˈärk \

medical Definition of arc

1 :an arched or curved anatomical part, distance, or pathway — see reflex arc
2 :a sustained luminous discharge of electricity across a gap in a circuit or between electrodes

ARC

abbreviation

medical Definition of ARC

1 AIDS-related complex
2 American Red Cross


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