pi
|pi|
/paɪ/
circle ratio
Etymology
'pi' originates from the Greek letter 'π', which is the first letter of the Greek word 'periphery' (περίμετρος), meaning 'circumference'.
'π' was adopted in the 18th century by mathematicians to represent the mathematical constant.
Initially, it was just a letter, but it evolved to represent the mathematical constant of the circle's circumference to its diameter.
Meanings by Part of Speech
Noun 1
the sixteenth letter of the Greek alphabet (Π, π), used in mathematics to represent the ratio of the circumference of a circle to its diameter, approximately 3.14159.
The value of pi is crucial in geometry.
Synonyms
Noun 2
a mathematical constant representing the ratio of a circle's circumference to its diameter.
Pi is an irrational number.
Synonyms
Last updated: 2025/01/11 11:35