Unreviewed (from Wiktionary)

pi

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.

Weakest linkProbable

Unreviewed

This journey was extracted automatically from Wiktionary (CC BY-SA 4.0) and hasn't been checked by a person yet. Dates marked “c.” are estimated from each language's period, and every hop is graded at best “probable”.

The road to English

c. 3500 BCEProto-Semitic

Hops are evenly spaced; labels show the year each form is first attested.

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