Teserae or Tesserae: How To spell?
The word Teserae is misspelled against Tesserae, which is plural of "Tessera"
Tesserae has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings te & erae which should not be misspelled with single 'S'
Wrong Spelling:  te-s-erae  Correct Spelling:  te-ss-erae 
Explore spell check of Tesserae to spell without errors.