12-Letter Words Matching _S_______O__

There are 16 12-letter words that match _S_______O__. 8 are common words, such as ASSIGNATIONS and ASSOCIATIONS. A rarer one is OSTEOSARCOMA. 7 words contain a doubled letter.

Full list 16

assignationsassociationsasynchronousoscillationsoscilloscopeostentationsostentatiouspseudonymousassimilatoryastrobiologyastrogeologyisopropanolsascomycetousassentationsassimilatorsosteosarcoma

About this list

Words
16 (8 common words)
Common example
assignations
Rare example
osteosarcoma
Doubled letters
7
Ending in S
11

Questions

How many 12-letter words matching _s_______o__ are there?

16. 8 of them are common words.

What is a common example?

ASSIGNATIONS is among the common words in this set.