14-Letter Words Matching __________E__C

There are 21 14-letter words that match __________E__C. 3 are common words, such as HALLUCINOGENIC and HYPOALLERGENIC. A rarer one is ULTRAENERGETIC. In this set, I is the most frequent open letter (21 words). 4 words contain a doubled letter.

Full list 21

hallucinogenichypoallergenicphotosyntheticchemosyntheticelectrokineticgalactopoieticmagnetosphericsubatmosphericthermomagneticagglutinogenicantiallergenicasthenosphericcocarcinogeniccytopathogenicdiastereomericerythropoietichyperaesthetichyperenergeticprepsychedelicstereoisomericultraenergetic

About this list

Words
21 (3 common words)
Common example
hallucinogenic
Rare example
ultraenergetic
Doubled letters
4
Ending in S
0
Most frequent letter
I (21)

Questions

How many 14-letter words matching __________e__c are there?

21. 3 of them are common words.

What is a common example?

HALLUCINOGENIC is among the common words in this set.