Definitions
the 16th letter of the Greek alphabet
Word origin
From Koine Greek πῖ (pî), from Ancient Greek πεῖ (peî), ultimately from Proto-Semitic *pay- (“mouth”). Doublet of pe. Its mathematical use apparently stems from its use as the first letter in περιφέρεια (periphéreia, “periphery; circumference”) and was first cited in 1706 in the Synopsis Palmariorum Matheseos by William Jones.
Used in a sentence
“In computing, pi characters may be entered with special key combinations.”
““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.””
“We're going back to the PI for a vacation this summer.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“mathematical constant 3.14”2 letters
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