13-Letter Words Matching _R___O_______

There are 54 13-letter words that match _R___O_______. 13 are common words, such as ARCHEOLOGICAL and ARCHEOLOGISTS. A rarer one is TROPHOBLASTIC. In this set, I is the most frequent open letter (42 words). 8 words contain a doubled letter.

Full list 54

Common words

archeologicalarcheologistsaristocraciesbroncobusterscryptographerergonomicallygraphologistsirrecoverableirrecoverablyirresolutionspraseodymiumsprognosticate
archeologicalarcheologistsaristocraciesbroncobusterscryptographerergonomicallygraphologistsirrecoverableirrecoverablyirresolutionspraseodymiumsprognosticateurbanologistsarsenopyritesarthroscopiescryptoclasticcryptographicfractocumulusfractostratusfrontogenesisgraphologicalgriseofulvinsorganogenesisorganotherapypreadolescentproctologistsarthropathiescraniometriescryptologicalcryptologistscryptorchismscryptozoologyfrontogenesesironmongeriesorganogenesesorganogeneticorismologicalpraxeologicalprebiologicalpreprocessingpreprocessorspreproductionpreprogramingpreprogrammedproctologicalproteoglycanstrampoliningstrampoliniststrichologiststrichopteranstrichothecenetriphosphatestriploblastictrophoblastic

About this list

Words
54 (13 common words)
Common example
archeological
Rare example
trophoblastic
Doubled letters
8
Ending in S
29
Most frequent letter
I (42)

Questions

How many 13-letter words matching _r___o_______ are there?

54. 13 of them are common words.

What is a common example?

ARCHEOLOGICAL is among the common words in this set.