12-Letter Words Matching ____O_____I_

There are 150 12-letter words that match ____O_____I_. 18 are common words, such as CARTOGRAPHIC and CHIROPRACTIC. A rarer one is VISCOELASTIC. In this set, C is the most frequent open letter (122 words). 5 words contain a doubled letter.

Full list 150

Common words

cartographicchiropracticethnocentricheliocentrichieroglyphichydrodynamiciconoclasticlithographicmeteorologicmicrocircuitorthographicosteoporosis
cartographicchiropracticethnocentricheliocentrichieroglyphichydrodynamiciconoclasticlithographicmeteorologicmicrocircuitorthographicosteoporosisphonographicphotographicpornographicprotoplasmicstenographicunapologeticachlorhydriaagamogenesisanamorphosisangiogenesiscaenogenesischirographicchymotrypsindiploblasticepanorthosisepimorphosisethnographicflavoproteinglucoproteinglycogenesisglycoproteinhagiographichistogenesishydrochlorichydrofluorichydrographichydrokinetichypnogenesisiconographickaryokinesislactoproteinleucocytosisleucopoiesismetrorrhagiaorthogenesisorthogeneticorthorhombicosteogenesisosteomalaciaosteoplasticosteoporoticpaleographicpathogenesispetroglyphicpetrographicphagocytosisphotoactinicphotokinesisphotosphericphotothermicphotovoltaicphylogeneticphytogenesispictographicpostorgasmicprosopopoeiaprotomorphicprototrophicradiographicsarcomatosisscolopendridsporogenesisstylographictroposphericuranographicachlorhydricandrocentricandrogenesisandrogeneticangiographicaortographicchorographicchymotrypticcladogenesiscladogeneticcosmographiccyanogenesiscyanogeneticcyclodextrincyclogenesisdaunorubicindiscographicdouroucoulisfibroblasticflexographicfollowershipheliographichierophantichistogenetichomeomorphichomeothermichydrocolloidhydromorphichydrospherickaryokineticleukocytosisleukopoiesisleukopoieticlithosphericluteotrophicluteotrophinmacrocytosismammographicmicrofilariamicrographicmicroseismicmicrotechnicmyeloblasticnormothermianormothermicoligotrophicorthopteroidosteoblasticosteoclasticpaedogenesispaedogeneticpaedomorphicpaleobotanicpantographicpathogeneticpetrogenesispetrogeneticphagocytoticphenocrysticphonogrammicphotochromicphotodynamicphotokineticplanographicplerocercoidradiomimeticreprographicsarcoplasmicscenographictetrodotoxinthyrotrophicthyrotrophinviscoelastic

About this list

Words
150 (18 common words)
Common example
cartographic
Rare example
viscoelastic
Doubled letters
5
Ending in S
31
Most frequent letter
C (122)

Questions

How many 12-letter words matching ____o_____i_ are there?

150. 18 of them are common words.

What is a common example?

CARTOGRAPHIC is among the common words in this set.