Glotal or Glottal: How To spell?
The word Glotal is misspelled against Glottal, an adjective meaning "pertaining to, produced by, the glottis; glottic."
Glottal has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings glo & al which should not be misspelled with single 'T'
Wrong Spelling:  glo-t-al  Correct Spelling:  glo-tt-al 
Find more incorrect spellings of Glottal to spell right way.