esteru

Welsh

Etymology

From ester +‎ -u.

Pronunciation

• (North Wales) IPA^(key): /ɛsˈdɛrɨ/, [ɛsˈtɛrɨ]
• (South Wales) IPA^(key): /ɛsˈdeːrɨ/, /ɛsˈdɛrɨ/, [ɛsˈteːrɨ], [ɛsˈtɛrɨ]

Verb

esteru (first-person singular present esteraf)

1. (organic chemistry, transitive) to esterify

Conjugation

Conjugation of esteru (literary)

	singular			plural			impersonal
	first	second	third	first	second	third
present indicative/future	esteraf	esteri	estera	esterwn	esterwch	esterant	esterir
imperfect (indicative/subjunctive)/ conditional	esterwn	esterit	esterai	esterem	esterech	esterent	esterid
preterite	esterais	esteraist	esterodd	esterasom	esterasoch	esterasant	esterwyd
pluperfect	esteraswn	esterasit	esterasai	esterasem	esterasech	esterasent	esterasid, esteresid
present subjunctive	esterwyf	esterych	estero	esterom	esteroch	esteront	esterer
imperative	—	estera	estered	esterwn	esterwch	esterent	esterer
verbal noun	esteru
verbal adjectives	esteredig esteradwy

Conjugation of esteru (colloquial)

inflected colloquial forms	singular			plural
	first	second	third	first	second	third
future	estera i, esteraf i	esteri di	esterith o/e/hi, esteriff e/hi	esterwn ni	esterwch chi	esteran nhw
conditional	esterwn i, esterswn i	esteret ti, esterset ti	esterai fo/fe/hi, estersai fo/fe/hi	esteren ni, estersen ni	esterech chi, estersech chi	esteren nhw, estersen nhw
preterite	esterais i, esteres i	esteraist ti, esterest ti	esterodd o/e/hi	esteron ni	esteroch chi	esteron nhw
imperative	—	estera	—	—	esterwch	—

Note: All other forms are periphrastic, as usual in colloquial Welsh.

Derived terms

• esteriad (“esterification”)

Mutation

Mutated forms of esteru

radical	soft	nasal	h-prothesis
esteru	unchanged	unchanged	hesteru

Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.

Further reading

• Griffiths, Bruce; Glyn Jones, Dafydd (1995), “esterify”, in Geiriadur yr Academi: The Welsh Academy English–Welsh Dictionary‎, Cardiff: University of Wales Press, →ISBN
• Delyth Prys; J.P.M. Jones; Owain Davies; Gruffudd Prys (2006), Y Termiadur: termau wedi'u safoni; standardised terminology‎ (in Welsh), Cardiff: Awdurdod cymwysterau, cwricwlwm ac asesu Cymru (Qualifications curriculum & assessment authority for Wales), →ISBN