15-Letter Words Matching ______O___R____

There are 29 15-letter words that match ______O___R____. 3 are common words, such as TELEPHOTOGRAPHY and TRIGONOMETRICAL. A rarer one is VIDEOCONFERENCE. In this set, T is the most frequent open letter (27 words). 3 words contain a doubled letter.

Full list 29

Common words

telephotographytrigonometricaltyrannosaurusesarchaeopteryxescephalochordatecorticosteroidscorticosteroneselectrophoreseselectrophoresiselectrophoreticelectrothermicsgalvanometrical
telephotographytrigonometricaltyrannosaurusesarchaeopteryxescephalochordatecorticosteroidscorticosteroneselectrophoreseselectrophoresiselectrophoreticelectrothermicsgalvanometricalichthyosaurusesinterconversionphototopographytelephotographsultrasonographycephalothoracescephalothoraxescomptrollershipelectrophoresedichthyosauriansintercomparisoninterconvertingrumormongeringsstadtholderatesstadtholdershipultracommercialvideoconference

About this list

Words
29 (3 common words)
Common example
telephotography
Rare example
videoconference
Doubled letters
3
Ending in S
14
Most frequent letter
T (27)

Questions

How many 15-letter words matching ______o___r____ are there?

29. 3 of them are common words.

What is a common example?

TELEPHOTOGRAPHY is among the common words in this set.