arc - Master This Word
Master this word with our 5-step learning method – Learn English in English
arc Word Meanings
- a curved line or shape
- a part of a circle
- a glowing electrical discharge
arc Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
arc Phonetic & Pronunciation
UK
/ɑːk/
US
/ɑrk/
arc Word Etymology
arc = 'curved' + -us (suffix indicating quality); Latin 'arcus' → Old French 'arc' → English. Imagine a rainbow arching across the sky, a perfect arc of colors bringing joy.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Arc is a flexible word in English that points to three related ideas at once. As a noun, it describes a curved line or shape, a smooth bend that is not a closed circle. In geometry, an arc is the portion of a circle between two endpoints. In everyday speech, arc can refer to a narrative curve or a journey that moves along a rounded path. A more specialized sense appears in electricity: an arc is a glowing electrical discharge across a gap. The etymology traces arc back to Latin arcus, via Old French arc, carrying the core sense of curvature from the original idea of a bow or arch.
Usage Reminders
- Arc is a noun for a curved line, an arc of a coastline, or a rainbow's arc.
- In geometry, an arc is a part of a circle's circumference between two endpoints.
- As a verb, to arc means to move or bend in a curved line.
- In electricity, arc refers to a glowing discharge across a gap.
- Do not confuse arc with arch, which is a curved top in architecture.
Common Misconceptions
- An arc is always a complete circle.
- Arc and arch are the same word.
- Arc only refers to rainbows.
- Arc can only be a noun.
- An arc is a straight line.
Thinking Differences
Explain to an English speaker (meta, keep short)
Learning Tips
- Think of arc as curved, not closed
- Remember three senses: curved line, circle part, electrical discharge
- Differentiate arc from arch (architectural top)
- Use narrative arc for storytelling
- When talking about electricity, pair arc with discharge or glow
- Practice with geometry terms like radius, circumference
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of the word 'arc'?
A.A precious metal
B.To walk quickly
C.A type of tree
D.A curved line
Step 2: Usage
Which of the following sentences uses 'arc' correctly?
A.She ran an arc around the park.
B.His favorite food is arc.
C.I need to buy a new arc for my car.
D.The arc of the rainbow was beautiful.
Step 3: Similar Words
Which word is a synonym of 'arc'?
A.Loop
B.Straight line
C.Triangle
D.Circle
Step 4: Opposite Words
What could be an opposite of 'arc'?
A.Wave
B.Crescent
C.Sphere
D.Straight line
Step 5: Mastery
In what real-life context might you see an 'arc'?
A.During a bike race on a steep hill
B.At a music concert listening to jazz
C.In a cooking show learning how to bake
D.In a math class while studying geometry
Related Listening
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