15-Letter Words Matching T____O_________

There are 21 15-letter words that match T____O_________. 3 are common words, such as TECHNOLOGICALLY and TELECONFERENCED. A rarer one is TRICHOMONACIDES. 2 words contain a doubled letter.

Full list 21

technologicallyteleconferencedteleconferencesthermobarographthermobarometerthermochemistrythermodynamicaltoxicologicallytribromoethanoltechnostructureteratocarcinomathermojunctionsthermoperiodismthermoreceptorsthermoregulatedthermoregulatesthermoregulatorthermoremanencethermostabilitytrichomonacidaltrichomonacides

About this list

Words
21 (3 common words)
Common example
technologically
Rare example
trichomonacides
Doubled letters
2
Ending in S
5

Questions

How many 15-letter words matching t____o_________ are there?

21. 3 of them are common words.

What is a common example?

TECHNOLOGICALLY is among the common words in this set.