Tau gallicum (

majuscule Letter case is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smaller lowercase (or more formally ''minuscule'') in the written representation of certain languages. The writing ...

:Ꟈ(

minuscule Letter case is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smaller lowercase (or more formally ''minuscule'') in the written representation of certain languages. The writing ...

: ꟈ(

)) is a letter that was used to write the

Gaulish language Gaulish was an ancient Celtic language spoken in parts of Continental Europe before and during the period of the Roman Empire. In the narrow sense, Gaulish was the language of the Celts of Gaul (now France, Luxembourg, Belgium, most of Switzer ...

.Proposal for the addition of four Latin characters to the UCS

Michael Everson Michael Everson (born January 9, 1963) is an American and Irish linguist, script encoder, typesetter, type designer and publisher. He runs a publishing company called Evertype, through which he has published over a hundred books since 2006. His ...

and Chris Lilley, 2019. It is a D with the horizontal bar from the Greek letter Θ. It likely represented a or sound.

Name

The Latin phrase literally means " Gallic

tau Tau (uppercase Τ, lowercase τ, or \boldsymbol\tau; el, ταυ ) is the 19th letter of the Greek alphabet, representing the voiceless dental or alveolar plosive . In the system of Greek numerals, it has a value of 300. The name in English ...

". The only known mention of the letter is found in Catalepton, a set of epigrams attributed to

Virgil Publius Vergilius Maro (; traditional dates 15 October 7021 September 19 BC), usually called Virgil or Vergil ( ) in English, was an ancient Roman poet of the Augustan period. He composed three of the most famous poems in Latin literature: t ...

and collected after his death in

Appendix Vergiliana The ''Appendix Vergiliana'' is a collection of poems traditionally ascribed as being the juvenilia (work written as a juvenile) of Virgil.Régine ChambertVergil's Epicureanism in his early poems in "Vergil, Philodemus, and the Augustans" 2003: "V ...

. The second epigram contains the following text: It is not known, however, whether the sound described by

is the same as that for which the term is currently used.

Letter

After using the

Greek alphabet The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BCE. It is derived from the earlier Phoenician alphabet, and was the earliest known alphabetic script to have distinct letters for vowels as we ...

, the

Gauls The Gauls ( la, Galli; grc, Γαλάται, ''Galátai'') were a group of Celtic peoples of mainland Europe in the Iron Age and the Roman period (roughly 5th century BC to 5th century AD). Their homeland was known as Gaul (''Gallia''). They s ...

adopted the

Latin alphabet The Latin alphabet or Roman alphabet is the collection of letters originally used by the ancient Romans to write the Latin language. Largely unaltered with the exception of extensions (such as diacritics), it used to write English and the o ...

to transcribe their language. However, they keep a few letters from the previous alphabet to note sounds unknown to the second. Tau gallicum is said to have been inspired by the Greek letter Θ (

theta Theta (, ; uppercase: Θ or ; lowercase: θ or ; grc, ''thē̂ta'' ; Modern: ''thī́ta'' ) is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth . In the system of Greek numerals, it has a value of 9. Gr ...

). Its spelling is very variable: one meets among others a crossed out D, resembling Đ but where the horizontal bar crosses completely the letter, as well as a form similar to the lowercase

eth (colloquially) , former_name = eidgenössische polytechnische Schule , image = ETHZ.JPG , image_size = , established = , type = Public , budget = CHF 1.896 billion (2021) , rector = Günther Dissertori , president = Joël Mesot , a ...

ð. The character then evolves to a double or single s crossed out, ss, then to one or two single s. The letter can be found in the initial of the name of the Celtic goddess

Sirona In Celtic polytheism, Sirona was a goddess worshipped predominantly in East Central Gaul and along the Danubian limes. A healing deity, she was associated with healing springs; her attributes were snakes and eggs. She was sometimes depicted with A ...

, whose name is written as: ''Sirona'', ''Đirona'' or ''Thirona'', highlighting the difficulty of noting the initial sound in the Latin alphabet. The letter is also present in the lead of Chamalières, a lead tablet discovered in 1971 in

Chamalières Chamalières (; Auvergnat: ) is a commune in the Puy-de-Dôme department, Auvergne-Rhône-Alpes, central France. With 17,276 inhabitants (2019), Chamalières is the fourth-largest town in the department. It lies adjacent to the west of Clermont ...

and written in the

Gallic language Gaulish was an ancient Celtic language spoken in parts of Continental Europe before and during the period of the Roman Empire. In the narrow sense, Gaulish was the language of the Celts of Gaul (now France, Luxembourg, Belgium, most of Switzer ...

with Latin cursive letters: snIeððdic, aððedillI.

Pronunciation

The precise value of the sound transcribed by the Gallic tau is not known. It is supposed that it denotes the dental affricate consonant group , in free variation with in the initial position.

Use on computers

References

{{Reflist D stroke Palaeography