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WIKTIONARY VIA KAIKKI / WIKTEXTRACT
Imported dictionary evidence
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35,981 English word records · 45,491 etymology sections in this online subset
PARTIAL ENGLISH COVERAGE · FULL CORPUS REMAINS LOCAL2 source sections across 2 headwords matching “Tau”. These are separate from the reviewed results below.
TauEnglish (en) · Unnumbered etymologySource text
Variant of Tao.
Original Wiktionary entry and references ↗tauEnglish (en) · Unnumbered etymologySource text
From Middle English tau, taue, from Latin tau, from Ancient Greek ταῦ (taû) and Hebrew תָּו (tav). Sense 7 was used by Joseph M. Lindenberg in 1991, and popularized by the American educator and entrepreneur Michael Hartl in a 2010 paper which explains that τ resembles π; and that τ is the Greek equivalent of t, the first letter of turn, and 2π corresponds to one turn of a circle with a radius of one unit. Sense 8.1 (“ellipsis of tau lepton or tau particle”) was coined by the American physicist Martin Lewis Perl (1927–2014) after the first letter of Ancient Greek τρίτον (tríton, “third”), since the tau lepton or tauon was the third charged lepton discovered.
Original Wiktionary entry and references ↗INDEPENDENT SOURCE LIBRARY
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Browse the independently attributed sources →010
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WORD DOSSIERS
No reviewed record in this collection contains “tau.” Absence describes this graph, not all of linguistic scholarship.
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ATTESTED / RECONSTRUCTED / BOUNDARY
HISTORICAL FORMS
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WHERE INTERPRETATION IS TESTED
CLAIMS & DISPUTES
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BOOKS / DICTIONARIES / ARTICLES / DATABASES
SOURCES
No reviewed record in this collection contains “tau.” Absence describes this graph, not all of linguistic scholarship.
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FIRST USES & HISTORICAL OBJECTS
ATTESTATION WITNESSES
DIRECTLY INSPECTEDmanuscript
Codex Argenteus, Matthew 5:44
hatjan / hatjan / early 6th century
Codex Argenteus facsimile 6 — folio 3v, Matthew 5:42–47witness excerpt / OPEN RECORD ↗DIRECTLY INSPECTEDmanuscript
Codex Argenteus, Luke 6:27
hatan / hatan / early 6th century
Codex Argenteus facsimile 186 — folio 143v, Luke 6:25–30witness excerpt / OPEN RECORD ↗DIRECTLY INSPECTEDmanuscript
Codex Argenteus, Luke 6:27
fijan / fijan / early 6th century
Codex Argenteus facsimile 186 — folio 143v, Luke 6:25–30witness excerpt / OPEN RECORD ↗06
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