tarthu

Welsh

Etymology

From tarth (“dry”) +‎ -u.

Pronunciation

• (North Wales) IPA^(key): /ˈtarθɨ̞/
• (South Wales) IPA^(key): /ˈtarθi/

Verb

tarthu (first-person singular present tarthaf)

1. (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

Conjugation (literary)

	singular			plural			impersonal
	first	second	third	first	second	third
present indicative/future	tarthaf	sychderthi	tartha	tarthwn	sychderthwch, tarthwch	tarthant	sychderthir
imperfect (indicative/subjunctive)/ conditional	tarthwn	tarthit	tarthai	tarthem	tarthech	tarthent	sychderthid
preterite	sychderthais	sychderthaist	tarthodd	tarthasom	tarthasoch	tarthasant	tarthwyd
pluperfect	tarthaswn	tarthasit	tarthasai	tarthasem	tarthasech	tarthasent	tarthasid, tarthesid
present subjunctive	tarthwyf	sychderthych	tartho	tarthom	tarthoch	tarthont	tarther
imperative	—	tartha	tarthed	tarthwn	sychderthwch, tarthwch	tarthent	tarther
verbal noun	tarthu
verbal adjectives	tarthedig tarthadwy

Conjugation (colloquial)

Inflected colloquial forms	singular			plural
	first	second	third	first	second	third
future	tartha i, tarthaf i	tarthi di	tarthith o/e/hi, tarthiff e/hi	tarthwn ni	tarthwch chi	tarthan nhw
conditional	tarthwn i, tarthswn i	tarthet ti, tarthset ti	tarthai fo/fe/hi, tarthsai fo/fe/hi	tarthen ni, tarthsen ni	tarthech chi, tarthsech chi	tarthen nhw, tarthsen nhw
preterite	tarthais i, tarthes i	tarthaist ti, tarthest ti	tarthodd o/e/hi	tarthon ni	tarthoch chi	tarthon nhw
imperative	—	tartha	—	—	tarthwch	—
Note: All other forms are periphrastic, as usual in colloquial Welsh.

Derived terms

• sychdarthu (“to sublimate”)
• tarthiad (“evaporation”)

Derived terms

• 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