arc

/ɑ:k/
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arc

The rainbow forms a perfect arc across the sky.

Definition
  1. Noun:

    • A curved shape or line: An "arc" is something that has a smooth, continuous curve, like part of a circle or a rainbow.
    • A continuous portion of a circle: In geometry, an "arc" is a specific segment of the circumference of a circle.
    • Electrical discharge through a gas: In physics, an "arc" is a luminous electrical discharge, like a spark or flash of light, that occurs when electricity jumps through the air or another gas.
  2. Verb:

    • To form a curve or arch: To "arc" means to move or lie along a curved path, creating an arch-like shape.
Usage Examples
  • Noun:

    • The rainbow formed a perfect arc across the sky.
    • The architect drew an arc with a compass to design the window.
    • The welder used an electric arc to join the metal pieces.
  • Verb:

    • The ball arced high into the air before landing in the goal.
    • The road arcs gently around the lake.
Advanced Usage
  • "Arc of history": A metaphorical phrase describing the long-term, seemingly inevitable progression or trend of historical events.

    • Many believe the arc of history bends toward justice.
  • "Story arc" or "character arc": A narrative term for the overarching development or transformation of a plot or a character over the course of a story.

    • The protagonist's character arc from coward to hero was compelling.
Variants and Related Words
  • Arc lamp (n): A lamp that produces light from an electric arc.

    • Early street lighting sometimes used arc lamps.
  • Arc welding (n): A welding process that uses an electric arc to melt and join metals.

    • He is skilled in arc welding.
  • Arcing (n/adj): The act of forming an arc; producing an electrical arc.

    • The faulty wire caused dangerous arcing.
Synonyms
  • Curve: A line that deviates from being straight.
  • Arch: A curved symmetrical structure spanning an opening.
  • Crescent: A shape resembling a segment of a ring, like the moon.
Related Phrasal Verbs/Constructions

(Note: "Arc" is not commonly used with particles to form phrasal verbs. Its verbal use is typically intransitive.) - To arc over/above/across: These prepositions are often used with the verb "arc" to describe the path of the curve. - The bridge arcs over the river. - The fireworks arced across the night sky.

Related Idioms
  • The arc of the moral universe is long, but it bends toward justice: A famous quotation (often attributed to Martin Luther King Jr.) suggesting that, despite setbacks, history progresses toward fairness and righteousness.
    • She found hope in the idea that the arc of the moral universe bends toward justice.
arc

The rainbow forms a perfect arc across the sky.

Noun
  1. something curved in shape
  2. a continuous portion of a circle
  3. electrical conduction through a gas in an applied electric field
Verb
  1. form an arch or curve
    • her back arches
    • her hips curve nicely