9-Letter Words Matching ____O___M

There are 73 9-letter words that match ____O___M. 24 are common words, such as ANABOLISM and DEPROGRAM. A rarer one is TECTONISM. In this set, I is the most frequent open letter (53 words). 7 words contain a doubled letter.

Full list 73

Common words

anabolismdeprogramdespotismharmoniumhectogramhistogramhypnotismmacrocosmmammogrammausoleummicrocosmmicrofilm
anabolismdeprogramdespotismharmoniumhectogramhistogramhypnotismmacrocosmmammogrammausoleummicrocosmmicrofilmmongolismneologismpetroleumplutoniumradiogramreprogramsyllogismsymbolismsymposiumterrorismvoodooismzirconiumangiogramanthodiumapriorismbromoformcartogramdaltonismdiabolismdialogismdiazoniumeconomismeuphoniumfusionismhierogramkissogrammammonismmeliorismmicrogramnarcotismnephogramneurogrampanlogismphonogramphotogrampictogramquixotismresponsumrhizobiumsensoriumstomodeumstyrofoamtrifoliumtriforiumaudiogrambiologismcastoreumcladogramdicrotismepigonismhoodooismhydroniummethodismmicrobeammicroformprotodermscalogramsociogramsulfoniumsympodiumtectonism

About this list

Words
73 (24 common words)
Common example
anabolism
Rare example
tectonism
Doubled letters
7
Ending in S
0
Most frequent letter
I (53)

Questions

How many 9-letter words matching ____o___m are there?

73. 24 of them are common words.

What is a common example?

ANABOLISM is among the common words in this set.