13-Letter Words Matching ____O_____R__

There are 28 13-letter words that match ____O_____R__. 7 are common words, such as DISCOMFITURES and DISCOMPOSURES. A rarer one is VISCOSIMETRIC. In this set, I is the most frequent open letter (24 words). 1 words contain a doubled letter.

Full list 28

Common words

discomfituresdiscomposureshydroelectricnitroglycerinphotoelectricthoroughfarestrigonometriccyanobacteriaferroelectricflavopurpurinnitrobacteriaphotoelectron
discomfituresdiscomposureshydroelectricnitroglycerinphotoelectricthoroughfarestrigonometriccyanobacteriaferroelectricflavopurpurinnitrobacteriaphotoelectronphotogravurespiezoelectricradiotelegramsiphonophoressocioculturalthoroughwortsaminoaciduriaethnohistoricmicroculturalmicroculturesphycoerythrinprotohistoricsensorineuraltriboelectricturboelectricviscosimetric

About this list

Words
28 (7 common words)
Common example
discomfitures
Rare example
viscosimetric
Doubled letters
1
Ending in S
7
Most frequent letter
I (24)

Questions

How many 13-letter words matching ____o_____r__ are there?

28. 7 of them are common words.

What is a common example?

DISCOMFITURES is among the common words in this set.