Words that contain 'o' and end in 'ium'


This is a popular word choice, so much so there exists over 100 words to consider.

5 letter words

  • odium
  • onium
  • opium
  • otium

6 letter words

  • codium
  • conium
  • corium
  • dolium
  • folium
  • gonium
  • ionium
  • logium
  • lolium
  • lotium
  • oarium
  • oidium
  • omnium
  • osmium
  • ostium
  • podium
  • sodium
  • tomium

7 letter words

  • agonium
  • alodium
  • arolium
  • azonium
  • doarium
  • elogium
  • erodium
  • exodium
  • holmium
  • ibolium
  • imonium
  • muonium
  • niobium
  • ogonium
  • ooecium
  • orarium
  • otidium
  • ovarium
  • oxonium
  • ozonium
  • protium
  • rhodium
  • spodium
  • spolium
  • stomium
  • thorium
  • zoarium

8 letter words

  • acontium
  • aerobium
  • allodium
  • ammobium
  • ammonium
  • arsonium
  • aurorium
  • bifolium
  • bohemium
  • boracium
  • bothrium
  • cenobium
  • chromium
  • ciborium
  • cydonium
  • colobium
  • comitium
  • conarium
  • conidium
  • conubium
  • coremium
  • coronium
  • disodium
  • domatium
  • dominium
  • doralium
  • embolium
  • empodium
  • emporium
  • encomium
  • eulogium
  • europium
  • exordium
  • gamobium
  • georgium
  • gonidium
  • gonimium
  • homagium
  • iodinium
  • iodonium
  • ionidium
  • lygodium
  • limonium
  • lomatium
  • meconium

9 letter words

  • agamobium
  • alcyonium
  • anthodium
  • antiopium
  • axopodium
  • azoxonium
  • botrydium
  • bromatium
  • bronchium
  • capnodium
  • carbonium
  • choragium
  • cichorium
  • cymoidium
  • cyrtomium
  • cladodium
  • coccidium
  • coelarium
  • coenobium
  • collegium
  • collyrium
  • collodium
  • colluvium
  • columbium
  • concilium
  • conjugium
  • connubium
  • contagium
  • corallium
  • cormidium
  • corticium
  • ctenolium
  • desmodium
  • diacodium
  • diazonium
  • ectropium
  • entropium
  • epigonium
  • epilobium
  • epipodium
  • epitonium
  • euphonium
  • europhium
  • exogonium
  • gynoecium

10 letter words

  • achenodium
  • acridonium
  • acropodium
  • acroterium
  • aegopodium
  • anaerobium
  • androecium
  • anhalonium
  • antilobium
  • antimonium
  • apothecium
  • arcosolium
  • arillodium
  • ascogonium
  • auditorium
  • azthionium
  • bothridium
  • botrychium
  • brimborium
  • cafetorium
  • capitolium
  • charmonium
  • chromatium
  • chromidium
  • cynomorium
  • closterium
  • coenoecium
  • colatorium
  • colloquium
  • cometarium
  • commercium
  • compendium
  • compluvium
  • conchylium
  • conopodium
  • consortium
  • copularium
  • criobolium
  • cronartium
  • curatorium
  • dendrobium
  • diammonium
  • digitorium
  • dysprosium
  • dracontium

11 letter words

  • achromatium
  • acroclinium
  • acrostolium
  • acrotarsium
  • aeciotelium
  • alcicornium
  • amphigonium
  • androconium
  • androgonium
  • apodyterium
  • archegonium
  • aspersorium
  • aulacomnium
  • azothionium
  • bulbocodium
  • californium
  • caprifolium
  • carpogonium
  • cassiopeium
  • cephalodium
  • chelidonium
  • chenopodium
  • cycloconium
  • clinopodium
  • clostridium
  • coccogonium
  • coenanthium
  • colletarium
  • colleterium
  • collunarium
  • collutorium
  • colophonium
  • columbarium
  • conditivium
  • conditorium
  • condominium
  • conoclinium
  • crematorium
  • decussorium
  • diascordium
  • dinotherium
  • dipotassium
  • endocardium
  • endocranium
  • endodontium

12 letter words

  • acroconidium
  • ambulatorium
  • androclinium
  • anthoclinium
  • aposaturnium
  • appressorium
  • arceuthobium
  • archesporium
  • ascogonidium
  • atmospherium
  • autobasidium
  • chirotherium
  • cyclammonium
  • cladosporium
  • coleosporium
  • collectarium
  • coniothyrium
  • contubernium
  • cuprammonium
  • deinotherium
  • discocarpium
  • dorcatherium
  • ectopatagium
  • eequinoctium
  • elaeothesium
  • endoconidium
  • endogonidium
  • endoperidium
  • enterolobium
  • excubitorium
  • fumigatorium
  • gametogonium
  • gastrolobium
  • gloeosporium
  • glossocomium
  • glossopodium
  • gompholobium
  • grypotherium
  • heliotropium
  • hemerologium
  • hydrocladium
  • hypocleidium
  • hypogastrium
  • hypophyllium
  • hypopygidium

13 letter words

  • acaridomatium
  • acarocecidium
  • actinouranium
  • agrobacterium
  • allopalladium
  • androgonidium
  • anoplotherium
  • anticlinorium
  • aureocasidium
  • autocoenobium
  • benzopyrylium
  • brontotherium
  • cheirotherium
  • chiropatagium
  • clistothecium
  • communitorium
  • cuproammonium
  • decamethonium
  • ectobronchium
  • elasmotherium
  • entobronchium
  • entomosporium
  • epimyocardium
  • episporangium
  • erythrogonium
  • ferrochromium
  • ferrotitanium
  • ferrovanadium
  • fusobacterium
  • gazophylacium
  • gymnocalycium
  • glyptotherium
  • glossotherium
  • hemicholinium
  • heterosporium
  • hexamethonium
  • hydrophyllium
  • hypochondrium
  • hyracotherium
  • inclinatorium
  • iridectropium
  • iridentropium
  • macroconidium
  • macrogonidium
  • martyrologium

14 letter words

  • actinotrichium
  • archaeotherium
  • arsinoitherium
  • cephalosporium
  • chalicotherium
  • cheiropatagium
  • chiropterygium
  • chondrocranium
  • chrysosplenium
  • cleistothecium
  • conservatorium
  • diplobacterium
  • ectonephridium
  • ferrozirconium
  • flavobacterium
  • gynosporangium
  • gonoblastidium
  • haemosporidium
  • helladotherium
  • hemoplasmodium
  • hydrophylacium
  • hypotrachelium
  • macrobacterium
  • megasporangium
  • meniscotherium
  • mesonephridium
  • microbacterium
  • monosporangium
  • nitrobacterium
  • nonequilibrium
  • organochordium
  • paleoytterbium
  • phosphammonium
  • photobacterium
  • phrontisterium
  • pyopericardium
  • plagiopatagium
  • polysporangium
  • praseodidymium
  • protevangelium
  • protomagnesium
  • protostrontium
  • pseudobasidium
  • pseudobrachium
  • pseudomycelium

15 letter words

  • actinosphaerium
  • androsporangium
  • anthracotherium
  • arthrobacterium
  • carposporangium
  • chartophylacium
  • cheiropterygium
  • chromobacterium
  • cylindrosporium
  • corynebacterium
  • dactylopatagium
  • dipterocecidium
  • enterobacterium
  • gymnosporangium
  • hemopericardium
  • hypnosporangium
  • macrosporangium
  • mercuriammonium
  • microsporangium
  • neuroepithelium
  • opthalmophorium
  • organomagnesium
  • protonephridium
  • pseudobacterium
  • pseudodeltidium
  • ptychopterygium
  • septocylindrium
  • spondylocladium
  • tetrasporangium

16 letter words

  • androgametangium
  • benzenediazonium
  • chylopericardium
  • diphyllobothrium
  • helminthosporium
  • hydropericardium
  • ichthyopterygium
  • macrozoogonidium
  • nitrosobacterium
  • parthenogonidium
  • pseudoplasmodium
  • pseudosporangium
  • trichosporangium

17 letter words

  • hematopericardium
  • pneumopericardium
  • propionibacterium

19 letter words

  • tetramethylammonium

20 letter words

  • pyopneumopericardium

22 letter words

  • hydropneumopericardium
  • pneumohydropericardium

What word from this list is the most interesting?
Our favorite unusual word from this page goes to 'staminodium'. The definition of 'staminodium' is as follows: "An abortive stamen, or any organ modified from an abortive stamen.".

In Scrabble, what's the highest possible score possible using this list of words that contain 'o' and end in 'ium'?
As there are a vast 851 entries, you should opt for 'zooecium' scoring 21 points in total.

Which word in particular on this page consists the largest number of characters?
The longest word one could construct from this combination is 'hydropneumopericardium', and it contains 22 characters.

What's the most popular word for this page?
According to our records, the most popular word in the dictionary that have 'o' in and end with 'ium' is 'opium'!

How many words could you make using this list?
On this page of words that have 'o' in and end with 'ium', there are 851 fantastic entries which are available in total.