Proto-Torres–Banks language
reconstructed ancestor of the Torres–Banks languages

Proto-Torres–Banks (PTB) is the reconstructed ancestor of the seventeen languages of the Torres and Banks Islands of Vanuatu. Like all indigenous languages of Vanuatu, it belongs to the Oceanic branch of the Austronesian languages.
More specifically, it is the shared ancestor of the following modern languages (ranked geographically, from NW to SE): Hiw, Lo-Toga, Lehali, Löyöp, Volow, Mwotlap, Lemerig, Vera'a, Vurës, Mwesen, Mota, Nume, Dorig, Koro, Olrat, Lakon, and Mwerlap.
Reconstruction
Proto-Torres–Banks, as reconstructed with the comparative method from the attested daughter languages, evidently represented an early, mutually intelligible chain of Oceanic dialects in the northern part of Vanuatu starting from 1000 BCE after Lapita settlement of the archipelago, as evidenced by the pattern of loss and retention of the Proto-Oceanic phoneme *R, which merged with *r in the early history of the North-Central Vanuatu dialect chain. It therefore is not a "true" proto-language in the sense of an undifferentiated language ancestral to all Torres–Banks languages, but rather a part of the early North-Central Vanuatu linkage with some dialectal variation across different island groups, before they eventually disintegrated into mutually unintelligible languages.
Elements of the proto-language have been proposed by linguist Alexandre François: vowels and consonants, personal pronouns, space system, vocabulary.
Phonology
Phoneme inventory
Proto-Torres–Banks had 5 phonemic vowels, /i e a o u/, and 16 consonants:
Following the loss of final POc consonants (or dialectal addition of a paragogic vowel), syllable structure in Proto-Torres–Banks was open, i.e. (C)V with optional consonant: e.g. POc *quraŋ "crayfish" > PTB *ura ~ *uraŋi; POc *matiruʀ "to sleep" > PTB *matiru; POc *laŋit "sky" > ptb *laŋi "wind". No descendant language preserves this situation today, but it can still be found in other related languages such as Gela and Uneapa.
The public source identifies “Proto-Torres–Banks language” as reconstructed ancestor of the Torres–Banks languages. This brief keeps that definition visible, then builds a research path around Proto-Torres, Banks and language.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Nov 13, 2025. The linked authority identifier is Q109918324. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1000.
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This entry incorporates text from “Proto-Torres–Banks language” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.