15-Letter Words Matching __________O___S

There are 45 15-letter words that match __________O___S. 10 are common words, such as BIOTECHNOLOGIES and CLAUSTROPHOBIAS. A rarer one is UNPROFESSIONALS. 6 words contain a doubled letter.

Full list 45

Common words

biotechnologiesclaustrophobiasconstitutionalsendocrinologiesinterrogatoriesophthalmologiesphantasmagoriasslaughterhousestonsillectomiestroubleshootersadenoidectomiescountermelodies
biotechnologiesclaustrophobiasconstitutionalsendocrinologiesinterrogatoriesophthalmologiesphantasmagoriasslaughterhousestonsillectomiestroubleshootersadenoidectomiescountermelodiesgeomorphologiesmastoidectomiespneumonectomiesprostatectomiespsychoneuroticssalpingectomiesadrenalectomiesanticarcinogenschemotaxonomieschronobiologiescomputerphobiascontainerboardscontradictoriescryptozoologiesecocatastrophesecophysiologieselectrodepositsencephalitogensepizootiologiesgeochronologieshelminthologiesoptoelectronicspharmacognosiesphenomenologiesprecipitinogenspsychobiologiespsychohistoriesroentgenologiessedimentologiessigmoidoscopiessympathectomiesthyroidectomiesunprofessionals

About this list

Words
45 (10 common words)
Common example
biotechnologies
Rare example
unprofessionals
Doubled letters
6
Ending in S
45

Questions

How many 15-letter words matching __________o___s are there?

45. 10 of them are common words.

What is a common example?

BIOTECHNOLOGIES is among the common words in this set.