12-Letter Words End with 'tion'

There are 397 12-letter words that end with 'tion'.

autorotation	autoxidation	basification
abbreviation	acceleration	accentuation
accumulation	adjudication	adulteration
aldolization	alimentation	alliteration
amalgamation	amelioration	amortization
annihilation	annunciation	antiabortion
anticipation	antidilution	antifriction
apperception	appreciation	arborization
articulation	asphyxiation	asseveration
assimilation	augmentation	auscultation
blastulation	cachinnation	calumniation
canalization	cancellation	canonization
cantillation	capacitation	capitulation
chlorination	citification	civilisation
civilization	claudication	coacervation
coadaptation	codification	cogeneration
cohabitation	colonisation	colonization
colorization	columniation	crenellation
creolization	curarization	deactivation
debilitation	decapitation	deceleration
decongestion	deflagration	degeneration
deglaciation	deionization	delamination
deliberation	delimitation	demodulation
demonization	denaturation	denomination
denunciation	depopulation	depreciation
deputization	deracination	deregulation
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
echolocation	effectuation	elucubration
emancipation	emargination	emasculation
embolization	habilitation	halogenation
hebraization	hemodilution	hominization
homologation	humanization	humification
idealization	illumination	illustration
malformation	malnutrition	malversation
manipulation	masturbation	maximization
melanization	memorization	menstruation
minimization	ministration	encrustation
energization	equalization	equivocation
eternization	etherization	evisceration
exacerbation	exaggeration	exasperation
excogitation	excruciation	exenteration
exercitation	exhilaration	expatriation
explantation	exploitation	laterization
latinization	legalization	legitimation
liquefaction	localization	misdirection
miseducation	misquotation	mobilization
modification	monetization	moralization
motorization	gasification	gastrulation
genuflection	facilitation	felicitation
feminization	fenestration	fermentation
fiberization	fibrillation
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Note: These 397 12-letter words that end with 'tion' are found from the USA & Canada version of the tournament Scrabble word list.

Also see words end with ation, ction, ition, ption, ution, ntion, rtion, etion, stion, otion.

6-letter words end with 'tion' (10)
7-letter words end with 'tion' (28)
8-letter words end with 'tion' (104)
9-letter words end with 'tion' (215)
10-letter words end with 'tion' (331)
11-letter words end with 'tion' (448)
12-letter words end with 'tion' (397)
13-letter words end with 'tion' (370)
14-letter words end with 'tion' (286)
15-letter words end with 'tion' (187)