15-Letter Words Matching __R_________L__

There are 18 15-letter words that match __R_________L__. 4 are common words, such as AERODYNAMICALLY and CHRONOLOGICALLY. A rarer one is STREPTOBACILLUS. 17 words contain a doubled letter.

Full list 18

aerodynamicallychronologicallyparentheticallyunrealisticallycerebrovascularhermeneuticallyhorticulturallymorphologicallyperipateticallyperistalticallyphrenologicallyxerographicallyirreconcilablesmartensiticallymeroblasticallyparageneticallypyrotechnicallystreptobacillus

About this list

Words
18 (4 common words)
Common example
aerodynamically
Rare example
streptobacillus
Doubled letters
17
Ending in S
2

Questions

How many 15-letter words matching __r_________l__ are there?

18. 4 of them are common words.

What is a common example?

AERODYNAMICALLY is among the common words in this set.