14-Letter Words Matching ___C______O___

There are 18 14-letter words that match ___C______O___. 3 are common words, such as PRECONDITIONED and PSYCHONEUROSES. A rarer one is PSYCHOBIOLOGIC. In this set, O is the most frequent open letter (17 words). 3 words contain a doubled letter.

Full list 18

preconditionedpsychoneurosespsychoneurosiscarcinomatosiselectrodepositgeochronologicpsychoneuroticcarcinomatosesecocatastropheelectroosmoseselectroosmosiselectroosmoticisochromosomesnonchromosomalnonchurchgoersnonconditionedprecipitinogenpsychobiologic

About this list

Words
18 (3 common words)
Common example
preconditioned
Rare example
psychobiologic
Doubled letters
3
Ending in S
8
Most frequent letter
O (17)

Questions

How many 14-letter words matching ___c______o___ are there?

18. 3 of them are common words.

What is a common example?

PRECONDITIONED is among the common words in this set.