Ten letter word

[Granny C]

Can any one tell me please a ten letter word that contains 7 consecutive consonants. and also what does the 'e' stand for in 'e' numbers.
Thank you very much.

[mac44]

Biorhythms.

[Granny C]

Thank you Mac44 I am much obliged

[slaney]

European

[Quizmonster]

The problem with the opening answer above is that the 'y' in 'biorhythms' is a vowel, not a consonant, just as it is in hymn, rhyme, hysterectomy and lots of other words.
As a matter of interest, Knightsbridge (13 letters) contains six genuine consonants in sequence.

[boaw]

I have always been taught that the five vowels are a,e,i,o,u, and that y is a consonant.

[Quizmonkey]

Y is officially classed as a semi-vocalic, literally half a vowel, as it IS used as a vowel in many words - as QM rightly says. It's surely clear that in words like rhythm and try, the y is the vowel??

[Quizmonster]

The sound of tutting in disapproval is sometimes written as 'tsk'. If you wished to indicate that someone had made several such sounds, you might refer to his 'tsktsks'. There are seven consecutive consonants in a row. Any other such words tend to be Germanic-style names such as you find in "Hirschsprung's disease".
Neither of the above possibilities has ten letters, of course, but each does genuinely fit the seven consonants requirement.

To add to Quizmonkey's excellent explanation, the only genuinely vowelless 'words' are those such as
Psst! = Hey, listen!
Sh! = Be quiet!
Zzzz = sleeping (in comics etc)
Brrr! = I'm cold!
Mm-nnh = I see/I agree
Nth as in 'to the nth degree'...it has a vowel sound - 'enth' - but no actual written vowel.
All other words have vowels...including 'Y'.

[Granny C]

Many thanks all of you.