pi - Master This Word
Master this word with our 5-step learning method – Learn English in English
pi Word Meanings
- A mathematical constant approximately equal to 3.14, representing the ratio of a circle's circumference to its diameter.
- A symbol used in mathematics to denote the constant.
- A value in trigonometry and calculus.
pi Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
pi Phonetic & Pronunciation
UK
/paɪ/
US
/paɪ/
pi Word Etymology
Root decomposition: π (lowercase Greek letter). Historical origin: from the Greek 'pip' meaning 'to fly' or 'to rush'. Memory image: imagine a bird (symbolizing 'pi') soaring through the sky, embodying the speed of math in circular motion.
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 Input5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the definition of the word 'pi'?
A.A type of fruit
B.A mathematical constant roughly equal to 3.14
C.A brand of shoes
D.A form of communication
Step 2: Usage
Which sentence uses 'pi' correctly?
A.The pie was delicious at the party.
B.He decided to pi a new game this weekend.
C.The circumference of a circle is calculated using pi.
D.She found a pi in her garden.
Step 3: Similar Words
What is a similar word to 'pi'?
A.none
B.circle
C.tangent
D.radius
Step 4: Opposite Words
What is the opposite of 'pi'?
A.none
B.line
C.diameter
D.point
Step 5: Mastery
Can you think of a real-life scenario where the concept of pi is applied?
A.When measuring the length of a circular garden's fence.
B.When counting the stars in the sky.
C.When choosing a color for a room.
D.When planning a vacation.
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