Words with 'o' as the first letter that end with 'sis'


For words that start with 'o' and end with 'sis', there are 97 entires.

5 letter words

  • oasis

6 letter words

  • ostsis
  • otosis

7 letter words

  • oncosis
  • osmesis
  • osmosis
  • ostosis

8 letter words

  • ochlesis
  • ogenesis
  • oocyesis
  • ophiasis
  • orchesis
  • orthosis
  • osteosis

9 letter words

  • odontosis
  • okoniosis
  • onychosis
  • oogenesis
  • ookinesis
  • oryzopsis
  • osphresis
  • otelcosis
  • otopiesis
  • otopyosis

10 letter words

  • ochronosis
  • odontiasis
  • oestriasis
  • oliguresis
  • oreophasis
  • ornithosis
  • orogenesis
  • osmidrosis
  • osteolysis
  • othelcosis
  • otocleisis
  • otomycosis
  • ovigenesis
  • ovogenesis
  • oxytonesis
  • oxyuriasis
  • ozonolysis

11 letter words

  • odontexesis
  • oncogenesis
  • onycholysis
  • ontogenesis
  • orthobiosis
  • ostempyesis
  • osteoclasis
  • otocariasis

12 letter words

  • odontoclasis
  • oidiomycosis
  • oleocellosis
  • onychoptosis
  • orodiagnosis
  • orthogenesis
  • orthotonesis
  • osteogenesis
  • osteoporosis
  • otosclerosis
  • ovariocyesis
  • overanalysis
  • overemphasis

13 letter words

  • odontogenesis
  • odontorthosis
  • odontotripsis
  • onchocercosis
  • onychomycosis
  • onomatopoesis
  • orchidoptosis
  • organogenesis
  • osteanabrosis
  • osteonecrosis
  • osteopetrosis

14 letter words

  • odontonecrosis
  • odontoplerosis
  • omphaloskepsis
  • onchocerciasis
  • onychogryposis
  • onomatopoiesis
  • osteanagenesis
  • osteodiastasis
  • osteoepiphysis
  • osteosclerosis
  • osteosynthesis
  • ovariocentesis
  • ovariosteresis

15 letter words

  • ophthalmoptosis
  • ophthalmostasis
  • opisthorchiasis
  • orchiocatabasis
  • osteothrombosis
  • otomucormycosis

16 letter words

  • ophthalmomycosis

17 letter words

  • ophthalmophthisis
  • osteohalisteresis

18 letter words

  • oesophagostomiasis
  • ophthalmodiagnosis

What is the largest word you can make from words that start with 'o' and end with 'sis'?
The longest word that's possible to derive from this list is 'oesophagostomiasis', and it consists of 18 characters.

In Scrabble, what's the highest possible score possible using words that start with 'o' and end with 'sis'?
One could make 'ochlesis' which gets 13 points.

What's the most common word on this page?
A common word for your search is 'oasis'.

What is the total number of words you could put together using this combination of letters?
You can assemble 97 words with the combination you asked for.

Is there a word from this page of word that starts with 'o' and ends with 'sis' that could be deemed as unusual in any respect?
One example of an uncommon word from this list is 'organogenesis'. It means "1. (Biol.) The origin and development of organs in animals and plants. 2. (Biol.) The germ history of the organs and systems of organs, -- a branch of morphogeny. Haeckel.".