πι
pi/pi/
πι is the Greek word for the irrational mathematical constant pi.
Meaning: irrational mathematical constant (noun)
How do you pronounce it?
The word is pronounced as /pi/.
Did you know?
- The Greek letter π comes from the letter 'pe' in the ancient alphabet, which evolved from the Phoenician letter 'pe' meaning 'mouth'.
- Archimedes, one of the most famous Greek mathematicians, did not call the constant πι but instead described it as a ratio between the circumference and the diameter.
- While the symbol π is universal, a Greek speaker would likely refer to the constant as ο αριθμός π (the number pi) rather than just the single letter.
Examples in context
- Η τιμή της πι είναι περίπου 3,14.I timí tis pi ínei perípou 3,14.The value of pi is approximately 3.14.
Example conversation
Two students are studying geometry together.
- Κώστας KostasΞέρεις τον τύπο για τον κύκλο;Xereis ton typo gia ton kyklo?Do you know the formula for the circle?
- Ελένη EleniΝαι, χρησιμοποιούμε το πι και την ακτίνα.Nai, chrisimopoioume to pi kai tin aktina.Yes, we use pi and the radius.
- Κώστας KostasΠοια τιμή του πι θα βάλουμε;Poia timi tou pi tha valoume?Which value of pi should we put?
- Ελένη EleniΑς χρησιμοποιήσουμε το τριστοίκο τριάντα τρία.As chrisimopoisoume to tristoiko trianta tria.Let's use 3.14.
Sources
- Wiktionary, “pi” translations and entries πι, CC BY-SA 4.0, dump of 2026-09-26.
- Word origins: Wiktionary entries πι, CC BY-SA 4.0.
