12-Letter Words End with 'ion'

There are 437 12-letter words that end with 'ion'.

autorotation	autoxidation	basification
abbreviation	acceleration	accentuation
accumulation	adjudication	adulteration
aldolization	alimentation	alliteration
amalgamation	amelioration	amortization
annihilation	annunciation	antiabortion
anticipation	antidilution	antifriction
antireligion	apperception	appreciation
apprehension	arborization	articulation
asphyxiation	asseveration	assimilation
augmentation	auscultation	blastulation
cachinnation	calumniation	canalization
cancellation	canonization	cantillation
capacitation	capitulation	chlorination
circumcision	circumfusion	citification
civilisation	civilization	claudication
coacervation	coadaptation	codification
cogeneration	cohabitation	colonisation
colonization	colorization	columniation
crenellation	creolization	curarization
deactivation	debilitation	decapitation
deceleration	decommission	decongestion
deflagration	degeneration	deglaciation
deionization	delamination	deliberation
delimitation	demodulation	demonization
denaturation	denomination	denunciation
depopulation	depreciation	deputization
deracination	deregulation	derepression
dermabrasion	desalination	desideration
despoliation	desquamation	detoxication
digitization	dilapidation	dimerization
disaffection	disclamation	disinfection
disinflation	dispensation	disquisition
dissertation	dissociation	distillation
distribution	divarication	commendation
compellation	compensation	complexation
complication	compurgation	conciliation
condemnation	condensation	confirmation
confiscation	conformation	conglobation
congregation	conscription	consecration
conservation	consignation	consociation
conspiration	constipation	constitution
constriction	construction	consultation
consummation	contestation	continuation
contribution	conversation	coordination
coproduction	duodecillion	echolocation
effectuation	elucubration	emancipation
emargination	emasculation	embolization
habilitation	halogenation	hebraization
hemodilution	hominization	homologation
humanization	humification	hypertension
idealization	illumination	illustration
malformation	malnutrition	malocclusion
malversation	manipulation	masturbation
maximization	melanization	memorization
menstruation	minimization	ministration
encrustation	energization	epithalamion
equalization	equivocation	eternization
etherization	evisceration	exacerbation
exaggeration	exasperation	excogitation
excruciation	exenteration	exercitation
exhilaration	expatriation	explantation
exploitation	extraversion	extroversion
laterization	latinization	legalization
legitimation	liquefaction	localization
misdirection	miseducation	misquotation
mobilization	modification
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Note: These 437 12-letter words that end with 'ion' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words end with tion, sion, lion, nion, rion, xion, hion, pion, gion, mion, cion, dion, vion, bion, eion, zion.

4-letter words end with 'ion' (3)
5-letter words end with 'ion' (8)
6-letter words end with 'ion' (35)
7-letter words end with 'ion' (78)
8-letter words end with 'ion' (164)
9-letter words end with 'ion' (319)
10-letter words end with 'ion' (402)
11-letter words end with 'ion' (480)
12-letter words end with 'ion' (437)
13-letter words end with 'ion' (400)
14-letter words end with 'ion' (301)
15-letter words end with 'ion' (194)