adweithio

== Welsh == === Etymology === From ad- +‎ gweithio; calque of English react. === Pronunciation === IPA(key): /adˈwei̯θjɔ/ Rhymes: -ei̯θjɔ === Verb === adweithio (first-person singular present adweithiaf) (chemistry) react (act upon each other) ==== Conjugation ==== ==== Related terms ==== adwaith (“reaction”) adweithydd (“reactor”) === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “adweithio”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies