11-Letter Words Matching __R____O___

There are 66 11-letter words that match __R____O___. 23 are common words, such as BIRTHSTONES and CHROMOSOMAL. A rarer one is THREADWORMS. In this set, S is the most frequent open letter (47 words). 17 words contain a doubled letter.

Full list 66

Common words

birthstoneschromosomalchromosomescircumpolarcorrespondsdirectionalfireproofedmortarboardparatrooperparenthoodsparishionerpartitioned
birthstoneschromosomalchromosomescircumpolarcorrespondsdirectionalfireproofedmortarboardparatrooperparenthoodsparishionerpartitionedperestroikapermafrostsporterhousespringboardstrongboxesstrongholdsterryclothsthreescoresturtledovesvaricoloredwarmbloodedbarleycornsbarrelhousecarotenoidscarposporeschronologicchrysarobincircumsolarformationalhorseshoersmarrowbonesmorphologicparaboloidsphrasebooksphrenologicpyrrhuloxiaspringhousestrawflowerstrikeboundstringboardstrongroomsvariationalcardiotoniccarmagnolescarotinoidscarpophoreschronologerherrenvolksnarrationalparasitoidsparasitosesparasitosispartitionerperoxisomalperoxisomespersonhoodspyrethroidspyroxenoidssarcoidosessarcoidosisscrollworksspringwoodsteratologicthreadworms

About this list

Words
66 (23 common words)
Common example
birthstones
Rare example
threadworms
Doubled letters
17
Ending in S
34
Most frequent letter
S (47)

Questions

How many 11-letter words matching __r____o___ are there?

66. 23 of them are common words.

What is a common example?

BIRTHSTONES is among the common words in this set.