There are a total of 204 8-letter words ending in 'ion', and the number may vary in different dictionaries. You can specify the dictionary and order.
- ablation 13
- ablution 14
- abortion 12
- abrasion 12
- acromion 15
- adaption 13
- addition 11
- adhesion 12
- adnation 11
- adoption 13
- aeration 9
- affusion 16
- agnation 12
- allusion 12
- alluvion 16
- ambition 15
- aphelion 15
- audition 11
- aversion 13
- aviation 13
- avoision 13
- avulsion 15
- champion 20
- citation 12
- coaction 15
- coercion 15
- cohesion 14
- conation 13
- cooption 15
- creation 12
- curation 13
- decision 13
- decurion 14
- delation 11
- deletion 11
- delusion 12
- demotion 13
- deration 10
- derision 10
- devotion 14
- dilation 11
- dilution 12
- diluvion 16
- disunion 12
- division 14
- dominion 14
- donation 11
- dotation 10
- duration 11
- eclosion 13
- eduction 14
- effusion 16
- egestion 11
- ejection 21
- election 13
- emersion 12
- emission 12
- emulsion 14
- enaction 13
- envision 14
- epyllion 16
- equation 19
- erection 12
- eruption 13
- evection 16
- eversion 13
- eviction 16
- evulsion 15
- exaction 19
- excision 19
- exertion 16
- falchion 18
- fenthion 15
- fetation 12
- fixation 19
- flection 16
- fraction 15
- friction 15
- fruition 13
- function 17
- ganglion 15
- gelation 12
- gnathion 14
- gumption 18
- gyration 13
- halation 12
- himation 14
- ideation 10
- ignition 12
- illation 11
- illusion 12
- inaction 13
- incision 13
- infixion 20
- infusion 14
- inhesion 12
- invasion 14
- iodation 10
- junction 23
- lavation 14
- laxation 17
- legation 12
- lenition 11
- libation 13
- ligation 12
- lobation 13
- location 13
- locution 14
- lunation 12
- luxation 18
- melodion 14
- misunion 14
- monition 13
- munition 14
- mutation 13
- natation 10
- negation 12
- nidation 11
- nivation 14
- nolition 11
- nonunion 13
- notation 10
- novation 14
- nutation 11
- oblation 13
- oblivion 17
- occasion 15
- omission 12
- oxyanion 19
- pavilion 17
- petition 12
- position 12
- potation 12
- preunion 14
- prounion 14
- punition 14
- pupation 16
- quarrion 19
- question 19
- reaction 12
- recision 12
- relation 10
- religion 12
- remotion 12
- revision 13
- rogation 11
- rotation 9
- sanction 13
- scallion 14
- scansion 13
- scission 12
- scorpion 15
- scullion 15
- sedation 10
- sedition 10
- skillion 15
- solation 10
- solution 11
- sorption 12
- sponsion 13
- stallion 11
- stiction 12
- sudation 11
- swaption 15
- taxation 16
- thermion 14
- traction 12
- trillion 11
- trunnion 12
- vacation 16
- venation 14
- vexation 20
- vocation 16
- volition 14
- volution 15
- zonation 19
- allerion 8
- annexion 15
- bibation 12
- cibation 12
- emiction 12
- encomion 12
- etherion 11
- fauchion 16
- grillion 9
- gumphion 16
- histrion 11
- illision 8
- inustion 8
- irrision 8
- jobation 17
- limation 10
- nodation 9
- nudation 9
- orillion 8
- pacation 12
- panchion 15
- pression 10
- refusion 11
- scholion 13
- scontion 10
- stellion 8
- stillion 8
- vocalion 13
There are 204 8-letter words ending in ion in the well-known word game dictionary, 168 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 203 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 176 in the Words with Friends (WWF) dictionary.
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