15-Letter Words Matching __E_______O____

There are 20 15-letter words that match __E_______O____. 2 are common words, such as PRECONDITIONING and PRESERVATIONIST. A rarer one is THERMOPERIODISM. 1 words contain a doubled letter.

Full list 20

preconditioningpreservationistadenoidectomiesoverambitiouslypneumonectomiespresentationismpreservationismchemotaxonomieschemotaxonomistcleistogamouslyelectrodepositsinefficaciouslyphenomenologiesphenomenologistprecipitinogenspreformationistpseudocoelomateroentgenologiesroentgenologistthermoperiodism

About this list

Words
20 (2 common words)
Common example
preconditioning
Rare example
thermoperiodism
Doubled letters
1
Ending in S
7

Questions

How many 15-letter words matching __e_______o____ are there?

20. 2 of them are common words.

What is a common example?

PRECONDITIONING is among the common words in this set.