12-Letter Words Ending in ONE

There are 19 12-letter words that end in ONE. 2 are common words, such as PROGESTERONE and TESTOSTERONE. A rarer one is PREGNENOLONE. In this set, R is the most frequent open letter (16 words). 2 words contain a doubled letter.

Full list 19

progesteronetestosteroneandrosteronebenzophenoneelectrophonehydroquinonemetallophonemethaqualonephytohormonesarrusophonespeakerphonetelegraphonethunderstonefurazolidoneneurohormoneparathormonepicturephoneprednisolonepregnenolone

About this list

Words
19 (2 common words)
Common example
progesterone
Rare example
pregnenolone
Doubled letters
2
Ending in S
0
Most frequent letter
R (16)

Questions

How many 12-letter words ending in one are there?

19. 2 of them are common words.

What is a common example?

PROGESTERONE is among the common words in this set.