Psitacid or Psittacid: How To spell?
The word Psitacid is misspelled against Psittacid, a noun meaning "One of the Psittaci."
Psittacid has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings psi & acid which should not be misspelled with single 'T'
Wrong Spelling:  psi-t-acid  Correct Spelling:  psi-tt-acid 
Find more wrongly spelled words of Psittacid to spell it well.