Atenuation or Attenuation: How To spell?
The word Atenuation is misspelled against Attenuation, a noun meaning "The act of attenuating; the act of making thin or less dense, or of rarefying, as fluids or gases."
Attenuation has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings a & enuation which should not be misspelled with single 'T'
Wrong Spelling:  a-t-enuation  Correct Spelling:  a-tt-enuation 
Check more misspelled words of Attenuation to spell it correct.