15-Letter Words Matching ___________G__S

There are 21 15-letter words that match ___________G__S. 3 are common words, such as BIOTECHNOLOGIES and ENDOCRINOLOGIES. A rarer one is SEDIMENTOLOGIES. 2 words contain a doubled letter.

Full list 21

biotechnologiesendocrinologiesophthalmologiesanthropophagousgeomorphologiesanthropophagiesanticarcinogensbacteriophagiesbraunschweigerschronobiologiescryptozoologiesecophysiologiesencephalitogensepizootiologiesgeochronologieshelminthologiesphenomenologiesprecipitinogenspsychobiologiesroentgenologiessedimentologies

About this list

Words
21 (3 common words)
Common example
biotechnologies
Rare example
sedimentologies
Doubled letters
2
Ending in S
21

Questions

How many 15-letter words matching ___________g__s are there?

21. 3 of them are common words.

What is a common example?

BIOTECHNOLOGIES is among the common words in this set.