15-Letter Words Matching ____T________I_

There are 16 15-letter words that match ____T________I_. 1 are common words, such as ELECTROMAGNETIC and ELECTROANALYSIS. A rarer one is SYMPTOMATOLOGIC. In this set, O is the most frequent open letter (15 words). 2 words contain a doubled letter.

Full list 16

electromagneticelectroanalysiselectrodialysiselectronarcosiselectrophoresiselectrophoreticboustrophedoniccomptrollershipelectroacousticelectrodialyticfunctionalistichematoporphyrinindeterministicirrationalisticstadtholdershipsymptomatologic

About this list

Words
16 (1 common words)
Common example
electromagnetic
Rare example
symptomatologic
Doubled letters
2
Ending in S
4
Most frequent letter
O (15)

Questions

How many 15-letter words matching ____t________i_ are there?

16. 1 of them are common words.

What is a common example?

ELECTROMAGNETIC is among the common words in this set.