13-Letter Words Containing GNO

There are 18 13-letter words that contain GNO. 5 are common words, such as DIAGNOSTICIAN and IGNOMINIOUSLY. A rarer one is XENODIAGNOSIS. In this set, I is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 18

diagnosticianignominiouslymisdiagnosingphysiognomiesprognosticateastereognosisbignoniaceousignoblenessesmagnoliaceouspharmacognosyprediagnosticundiagnosablebourguignonnepathognomonicserodiagnosesserodiagnosisxenodiagnosesxenodiagnosis

About this list

Words
18 (5 common words)
Common example
diagnostician
Rare example
xenodiagnosis
Doubled letters
2
Ending in S
9
Most frequent letter
I (17)

Questions

How many 13-letter words containing gno are there?

18. 5 of them are common words.

What is a common example?

DIAGNOSTICIAN is among the common words in this set.