pi

6 entries found for pi.
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pi[1,noun] pi[2,noun] pi[3,verb] pi[4,adjective] PI pi-meson

Main Entry: ¹pi
Pronunciation: 'pI
Function: noun
Inflected Form(s): plural pis /'pIz/
Etymology: Middle Greek, from Greek pei, of Semitic origin; akin to Hebrew pE pe
1 : the 16th letter of the Greek alphabet -- see ALPHABET table
2 a : the symbol π denoting the ratio of the circumference of a circle to its diameter b : the ratio itself : a transcendental number having a value rounded to eight decimal places of 3.14159265