Definition of Arc
Quick Meaning of Arc
A smooth curved line, like part of a circle. It can describe a shape or the path something takes.
Detailed Definition of Arc
A curved line or shape that forms part of a circle or other curve; the distance along such a curve.
How to Pronounce Arc
Stress pattern: O (1-syllable word).
Tip: Stress the single syllable: AHrk. The 'a' sounds like 'a' in 'father', the 'rc' blends smoothly.
Watch out: Some learners pronounce it as 'ark' like the boat; ensure the vowel sound is open: AHrk.
Origin and Etymology of Arc
From Latin 'arcus' (bow, arch). Related to 'arch' and 'archer'. Entered English in 13th century, originally meaning a curved weapon bow.
How to Use Arc in a Sentence
Each example shows “arc” with a CEFR level so learners can pick examples that match their fluency.
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“The rainbow forms a perfect arc across the sky.”
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“The trajectory of the projectile followed a parabolic arc.”
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“The architect designed a striking arc for the bridge's structure.”
Synonyms and Antonyms of Arc
Common Synonyms for Arc
Smart Synonyms for Arc — When to Use Each
- curve
- More general; applies to any bending line
- bend
- Simpler; focuses on direction change rather than mathematical
- trajectory
- Specialized; for paths of moving objects
Common Collocations with Arc
These phrases pair with “arc” in everyday English:
- arc of a circle
- parabolic arc
- electric arc
- arc of light
- arc lamp
Common Mistakes When Using Arc
Even fluent speakers slip up with “arc”. Here’s how to avoid the most common errors:
- ✗ Wrong: The arc are visible in the sky.
- ✓ Correct: The arc is visible in the sky.
- Why: 'Arc' is singular; use 'is'. For multiple curves, say 'arcs are'.
- ✗ Wrong: The light makes an arc shape.
- ✓ Correct: The light forms an arc. / The light creates an arc shape.
- Why: 'Arc' is already a noun for a shape; avoid redundant 'arc shape'.
- ✗ Wrong: I dont know about arc.
- ✓ Correct: I don't know about arc.
- Why: Use apostrophe in 'don't' (contraction of 'do not').
Other Forms of Arc
Frequently Asked Questions About Arc
What is the meaning of "Arc"?
A smooth curved line, like part of a circle. It can describe a shape or the path something takes.
How do you pronounce "Arc"?
The IPA is /ɑːrk/. Stress the single syllable: AHrk. The 'a' sounds like 'a' in 'father', the 'rc' blends smoothly.
What part of speech is "Arc"?
"Arc" is a noun at C1 level (Common European Framework).
What are synonyms for "Arc"?
Common synonyms include curve, bend, bow.
How do you use "Arc" in a sentence?
For example: "The rainbow forms a perfect arc across the sky."