There are a total of 391 8-letter words containing '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
- actioned 13
- actioner 12
- adaption 13
- addition 11
- adhesion 12
- adnation 11
- adoption 13
- aeration 9
- affusion 16
- agnation 12
- alations 10
- allusion 12
- alluvion 16
- ambition 15
- amnionic 16
- amotions 12
- antlions 11
- aphelion 15
- auctions 13
- audition 11
- aversion 13
- aviation 13
- avionics 16
- avoision 13
- avulsion 15
- bastions 12
- billions 14
- bionomic 18
- brionies 12
- bullions 15
- campions 18
- captions 15
- carrions 12
- cationic 15
- cautions 13
- cessions 12
- champion 20
- chorions 14
- citation 12
- clarions 13
- coaction 15
- coercion 15
- cohesion 14
- coitions 12
- conation 13
- cooption 15
- creation 12
- cullions 15
- curation 13
- cushions 15
- cushiony 17
- decision 13
- decurion 14
- deionise 10
- deionize 19
- delation 11
- deletion 11
- delusion 12
- demotion 13
- deration 10
- derision 10
- devotion 14
- dictions 13
- dilation 11
- dilution 12
- diluvion 16
- disunion 12
- division 14
- dominion 14
- donation 11
- dotation 10
- doupioni 14
- duration 11
- eclosion 13
- editions 10
- eduction 14
- effusion 16
- egestion 11
- ejection 21
- elations 10
- election 13
- elisions 10
- elusions 11
- elutions 11
- emersion 12
- emission 12
- emotions 12
- emulsion 14
- enaction 13
- enations 10
- envision 14
- eobionts 12
- epyllion 16
- equation 19
- erasions 9
- erection 12
- erosions 9
- eruption 13
- evasions 13
- evection 16
- eversion 13
- eviction 16
- evulsion 15
- exaction 19
- excision 19
- exertion 16
- factions 15
- falchion 18
- fashions 14
- fenthion 15
- fermions 15
- fetation 12
- fictions 15
- fissions 12
- fixation 19
- flection 16
- flexions 20
- fluxions 21
- fraction 15
- friction 15
- fruition 13
- function 17
- fusional 14
- ganglion 15
- gelation 12
- gnathion 14
- grunions 13
- gumption 18
- gyration 13
- halation 12
- hellions 13
- himation 14
- ideation 10
- ignition 12
- illation 11
- illusion 12
- inaction 13
- incision 13
- infixion 20
- infusion 14
- inhesion 12
- invasion 14
- iodation 10
- ionicity 14
- ionisers 9
- ionising 12
- ionizers 18
- ionizing 21
- ionogens 12
- ionomers 12
- jillions 20
- junction 23
- lampions 16
- lavation 14
- laxation 17
- lections 13
- legation 12
- legioned 13
- lenition 11
- lesioned 11
- libation 13
- ligation 12
- lionfish 15
- lionhead 13
- lionised 11
- lioniser 10
- lionises 10
- lionized 20
- lionizer 19
- lionizes 19
- lionlike 15
- lobation 13
- location 13
- locution 14
- lunation 12
- luxation 18
- mansions 13
- melodion 14
- mentions 13
- millions 14
- missions 12
- misunion 14
- monition 13
- morrions 12
- motional 13
- motioned 13
- motioner 12
- mullions 15
- munition 14
- munnions 15
- mutation 13
- natation 10
- national 11
- negation 12
- nidation 11
- nivation 14
- nolition 11
- nonionic 14
- nonunion 13
- notation 10
- notional 11
- novation 14
- nutation 11
- oblation 13
- oblivion 17
- occasion 15
- omission 12
- opinions 13
- optional 13
- optioned 13
- optionee 12
- orations 9
- ovations 13
- oxyanion 19
- pactions 15
- passions 12
- pavilion 17
- pensione 13
- pensioni 13
- pensions 13
- petition 12
- pillions 14
- pinioned 14
- pioneers 12
- plosions 13
- portions 12
- position 12
- potation 12
- preunion 14
- prounion 14
- pulsions 14
- punition 14
- pupation 16
- quarrion 19
- question 19
- rampions 15
- rational 10
- rationed 10
- reaction 12
- recision 12
- regional 12
- relation 10
- religion 12
- remotion 12
- reunions 11
- revision 13
- rogation 11
- rotation 9
- ructions 13
- sanction 13
- scallion 14
- scansion 13
- scission 12
- scorpion 15
- scullion 15
- sealions 10
- sections 12
- sedation 10
- sedition 10
- sessions 9
- skillion 15
- solation 10
- solution 11
- sorption 12
- sponsion 13
- stallion 11
- stations 9
- stiction 12
- suasions 10
- suctions 13
- sudation 11
- swaption 15
- symbions 17
- symbiont 17
- tactions 12
- talionis 10
- tampions 15
- taxation 16
- tensions 10
- ternions 10
- thermion 14
- thionate 11
- thionine 12
- thionins 12
- thionyls 14
- tompions 15
- torsions 9
- traction 12
- trillion 11
- trunnion 12
- tuitions 10
- unctions 14
- unionise 11
- unionism 14
- unionist 11
- unionize 20
- vacation 16
- venation 14
- versions 13
- vexation 20
- vibrions 16
- visional 14
- visioned 14
- vocation 16
- volition 14
- volution 15
- zabaione 21
- zillions 20
- zonation 19
- fashiony 17
- pereions 10
- abusions 10
- alerions 8
- allerion 8
- amations 10
- annexion 15
- bibation 12
- cantions 10
- cibation 12
- coctions 12
- ebionise 10
- ebionism 12
- ebionize 19
- emiction 12
- emptions 12
- encomion 12
- erionite 8
- etherion 11
- exomions 17
- fauchion 16
- franions 11
- fushions 14
- gabioned 12
- gillions 9
- grillion 9
- gumphion 16
- hallions 11
- hemiones 13
- hemionus 13
- histrion 11
- illision 8
- inustion 8
- irrision 8
- jobation 17
- limation 10
- lioncels 10
- lionisms 10
- lionlier 8
- meionite 10
- mersions 10
- mictions 12
- mixtions 17
- murrions 10
- nepionic 12
- nodation 9
- nudation 9
- onionier 8
- onioning 9
- orarions 8
- orillion 8
- pacation 12
- panchion 15
- pionings 11
- plerions 10
- pompions 14
- pression 10
- psionics 12
- pumpions 14
- rections 10
- refusion 11
- rullions 8
- runnions 8
- scholion 13
- scontion 10
- soffioni 14
- stellion 8
- stillion 8
- taglioni 9
- talionic 10
- tersions 8
- tordions 9
- trionyms 13
- turdions 9
- unitions 8
- visioner 11
- vocalion 13
There are 391 8-letter words containing ion in the well-known word game dictionary, 304 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 386 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 314 in the Words with Friends (WWF) dictionary.
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