Pi

/paɪ/ · noun

Meaning

The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek..

Definitions by Sense

1. The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.
2. (mathematics) An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14159265.
3. (letterpress typography) Metal type that has been spilled, mixed together, or disordered.
4. (letterpress typography) To spill or mix printing type.
5. (typography) Not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type.
6. (typography) pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch).
7. Piaster.
8. Pious.

Example Sentences

In computing, pi characters may be entered with special key combinations.

Our Major was "Cherub" Cheeseman, noted for his foul language. I am afraid he lost a tidy little legacy that he was expecting from his aunt, the Dowager Lady Shuttlecock (a very "pi" old lady), through this same habit of his.

“Those are very 'pi' sentiments. Was a preacher in Staffordshire— I was raised chapel, though've tried to forget it—he talked that way... redemption and the lot.”

In Sense and Sensibility, as even you might agree, there's at least the danger of a rather pi moral framework clamping down on the spontaneous fun and leaving the sisters to survive - a bit drearily - on the periphery of a mean world.

Synonyms for pi

Antonyms for pi

Related Words

Word Forms

• pis
• pies
• piing
• pied

Usage Notes

Choose a synonym only when it preserves the intended meaning, tone, and grammar of the full sentence.

Practice and Learn More

Frequently Asked Questions