thoriwm

== Welsh == === Etymology === Borrowed from English thorium, from English Thor, representing Old Norse Þórr, from Proto-Germanic *Þunraz, from Proto-Indo-European *(s)tenh₂- (“to thunder”). === Pronunciation === IPA(key): /ˈθɔrjʊm/ Rhymes: -ɔrjʊm === Noun === thoriwm m (uncountable, not mutable) thorium ==== Related terms ==== thunderbolt === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “thoriwm”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies