twll du

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Welsh

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Etymology

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Calque of English black hole

Noun

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twll du m (plural tyllau duon)

  1. black hole (celestial body)

Mutation

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Welsh mutation
radical soft nasal aspirate
twll du dwll du nhwll du thwll du
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

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  • R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “twll du”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies