tarthu

== Welsh == === Etymology === From tarth (“haze, mist”) +‎ -u. === Pronunciation === (North Wales) IPA(key): /ˈtarθɨ̞/ (South Wales) IPA(key): /ˈtarθi/ === Verb === tarthu (first-person singular present tarthaf) (chemistry) to evaporate ==== Usage notes ==== The verbnoun or dictionary form of a verb, such as this entry, is employed as a masculine singular noun in Welsh to express an uncountable verbal noun. The corresponding countable noun is usually derived morphologically from the related verb. ==== Conjugation ==== ==== Derived terms ==== sychdarthu (“to sublimate”) tarthiad (“evaporation”) === See also === anweddu (“to vaporise”) anweddiad (“vaporisation”) === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “tarthu”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies