15-Letter Words Matching ____O___L______

There are 50 15-letter words that match ____O___L______. 6 are common words, such as MICROBIOLOGICAL and MICROBIOLOGISTS. A rarer one is RETROREFLECTORS. In this set, I is the most frequent open letter (45 words). 12 words contain a doubled letter.

Full list 50

Common words

microbiologicalmicrobiologistsnitrocellulosespaleontologistspoliomyelitidessorrowfulnessesconvolvulaceousmicromillimeteroligonucleotideosteomyelitidespaleontologicalsociobiological
microbiologicalmicrobiologistsnitrocellulosespaleontologistspoliomyelitidessorrowfulnessesconvolvulaceousmicromillimeteroligonucleotideosteomyelitidespaleontologicalsociobiologicalsociobiologistsastrobiologistscorporealnessesdisconsolationshydrobiologicalhydrobiologistslignocelluloseslignocellulosicmacroevolutionsmethoxyfluranesmicroanalyticalmicroevolutionsmicropublishersmicropublishingmiscorrelationsneurobiologicalneurobiologistsnonconsolidatednoncorrelationspaleobiologicalpaleobiologistspaleoecologicalpaleoecologistspaleozoologicalpaleozoologistsphotobiologicalphotobiologistsphotoduplicatedphotoduplicatesphotogeologicalphotogeologistspictorialnessesprotozoologistsradiobiologicalradiobiologistsretroreflectionretroreflectiveretroreflectors

About this list

Words
50 (6 common words)
Common example
microbiological
Rare example
retroreflectors
Doubled letters
12
Ending in S
30
Most frequent letter
I (45)

Questions

How many 15-letter words matching ____o___l______ are there?

50. 6 of them are common words.

What is a common example?

MICROBIOLOGICAL is among the common words in this set.