rhaidd

== Welsh == === Etymology === From Latin radius (“ray”). === Pronunciation === IPA(key): /r̥ai̯ð/ === Noun === rhaidd f (plural rheiddiau) ray, beam (of light) Synonyms: pelydryn, pelydr antler Synonym: corn (botany) radius (geometry, obsolete) radius Synonym: radiws ==== Derived terms ==== rheidden (“ray (physiology)”) rheiddio (“to radiate”) rheiddyn (“dart; glimmer”) === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “rhaidd”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies