13-Letter Words Matching _R________O__

There are 67 13-letter words that match _R________O__. 24 are common words, such as ARCHIPELAGOES and ARTICULATIONS. A rarer one is UREDINIOSPORE. In this set, S is the most frequent open letter (63 words). 12 words contain a doubled letter.

Full list 67

Common words

archipelagoesarticulationscrenellationsirresolutionsorganizationsprecognitionspreconditionspredilectionsprescriptionspresentationspreservationsprevaricators
archipelagoesarticulationscrenellationsirresolutionsorganizationsprecognitionspreconditionspredilectionsprescriptionspresentationspreservationsprevaricatorsprimogenitorsproclamationsprolongationspromulgationspropitiationsproscriptionsprostitutionsprotestationstransgressorstransmissionstroubleshootsurbanizationsargentiferousargilliferousarteriovenousarundinaceousbrachypterouscrassulaceousfrumentaceousgraminivorousorchestratorsorthognathousprecipitatorsprolegomenousproparoxytoneprostatectomyproteinaceoustransductionstransudationstrephinationsarborizationscraftspersonscreaturehoodscreolizationscryptozoologydraftspersonsfractionatorsgranulomatousorganisationspreadmissionsprecopulatorypredigestionspreformationspreinductionspremeditatorspreprocessorspreselectionstransfectionstredecillionstriamcinolonetrichlorphonstrifurcationstriplicationsurbanisationsurediniospore

About this list

Words
67 (24 common words)
Common example
archipelagoes
Rare example
urediniospore
Doubled letters
12
Ending in S
61
Most frequent letter
S (63)

Questions

How many 13-letter words matching _r________o__ are there?

67. 24 of them are common words.

What is a common example?

ARCHIPELAGOES is among the common words in this set.