Example Sentences
"To find the circumference of a circle, multiply the diameter by pi."
"Pi is one of the most important constants in mathematics."
Synonyms & Related Terms
Quick Check
Which best describes the meaning of pi?
Study Tips
To remember pi, try writing it in a sentence of your own. Connect it to something you already know about mathematics.
Use it in conversation today — saying a word aloud three times helps lock it into long-term memory.