rhwd

Welsh

Etymology

Perhaps from Proto-Celtic *rutu-,[1] as in the placename Rutupiae.[2]

Pronunciation
  • IPA(key): /r̥uːd/

Noun

rhwd m (plural rhydau)

  1. rust, corrosion
  2. (phytopathology) rust, rubigo
    Synonyms: y gawod goch, rhydni

Derived terms
  • rhydlyd (“rusty”)
  • rhydni (“rustiness; rubigo”)
  • rhydu (“to rust”)
  • rhytgoch (“rust-coloured; russet”)

Mutation
Welsh mutation
radical soft nasal aspirate
rhwd rwd unchanged unchanged
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References
  1. Eric P. Hamp (1966) “Roman British Rutupiae, Gaulish Rutuba”, in Études Celtiques‎, volume 11, page 413‒414
  2. R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “rhwd”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
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