12-Letter Words Starting With OS

There are 23 12-letter words that start with OS. 8 are common words, such as OSCILLATIONS and OSCILLOSCOPE. A rarer one is OSTEOSARCOMA. In this set, O is the most frequent open letter (23 words). 5 words contain a doubled letter.

Full list 23

oscillationsoscilloscopeossificationostentationsostentatiousosteopathiesosteoporosesosteoporosisoscillogramsoscillographosteogenesisosteomalaciaosteoplasticosteoporoticostracodermsosmolalitiesosmolaritiesosteoblasticosteoclasticosteogenesesosteologicalosteologistsosteosarcoma

About this list

Words
23 (8 common words)
Common example
oscillations
Rare example
osteosarcoma
Doubled letters
5
Ending in S
13
Most frequent letter
O (23)

Questions

How many 12-letter words starting with os are there?

23. 8 of them are common words.

What is a common example?

OSCILLATIONS is among the common words in this set.