π

indecl.
π, πεῖ, IG 22.2783.23 (iv B. C.), BCH 29.483 (Delos), Hellad. ap. Phot.p.530B., indecl.: seventeenth (later sixteenth) letter of the Gr. alphabet: as numeral π/ = 80, but p' = 80,000.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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