Welsh

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Etymology

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From hyd (length) +‎ -red.

Pronunciation

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Noun

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hydred m (plural hydredau, not mutable)

  1. (geography) longitude
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Mutation

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Welsh mutation
radical soft nasal aspirate
hydred unchanged unchanged unchanged

Further reading

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