14-Letter Words Matching __________E_I_

There are 39 14-letter words that match __________E_I_. 4 are common words, such as HALLUCINOGENIC and HYPOALLERGENIC. A rarer one is VITELLOGENESIS. In this set, E is the most frequent open letter (30 words). 5 words contain a doubled letter.

Full list 39

Common words

hallucinogenichypoallergenicphotosynthesisphotosyntheticcarcinogenesischemosynthesischemosyntheticelectrokineticerythropoiesisgalactopoieticmagnetosphericnarcosynthesis
hallucinogenichypoallergenicphotosynthesisphotosyntheticcarcinogenesischemosynthesischemosyntheticelectrokineticerythropoiesisgalactopoieticmagnetosphericnarcosynthesisspermiogenesissubatmosphericthermomagneticagglutinogenicantiallergenicarchaebacteriaasthenosphericcocarcinogeniccorynebacteriacytopathogenicdiastereomericelectrogenesisenterobacteriaerythropoieticerythropoietinhyperaesthesiahyperaesthetichypercatalexishyperenergetichyperlipidemiahypomagnesemialeukemogenesisplasmapheresisprepsychedelicstereoisomericultraenergeticvitellogenesis

About this list

Words
39 (4 common words)
Common example
hallucinogenic
Rare example
vitellogenesis
Doubled letters
5
Ending in S
11
Most frequent letter
E (30)

Questions

How many 14-letter words matching __________e_i_ are there?

39. 4 of them are common words.

What is a common example?

HALLUCINOGENIC is among the common words in this set.