15-Letter Words Matching _____G_____I___

There are 15 15-letter words that match _____G_____I___. 3 are common words, such as GEOENGINEERINGS and NITROGLYCERINES. A rarer one is RETROGRADATIONS. In this set, O is the most frequent open letter (15 words). 4 words contain a doubled letter.

Full list 15

geoengineeringsnitroglycerinessegregationistsbioengineeringsbiodegradationsdisaggregationsexsanguinationsintergradationslaryngectomizedliturgiologistsnonengineeringsnonsegregationsphotogeologicalphotogeologistsretrogradations

About this list

Words
15 (3 common words)
Common example
geoengineerings
Rare example
retrogradations
Doubled letters
4
Ending in S
13
Most frequent letter
O (15)

Questions

How many 15-letter words matching _____g_____i___ are there?

15. 3 of them are common words.

What is a common example?

GEOENGINEERINGS is among the common words in this set.