Retrocesion or Retrocession: How To spell?

The word Retrocesion is misspelled against Retrocession, a noun meaning "Metastasis of an eruption or a tumor from the surface to the interior of the body."

Retrocession has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings retroce & ion which should not be misspelled with single 'S'
Wrong Spelling: retroce-s-ion
Correct Spelling: retroce-ss-ion
Find more incorrect spellings of Retrocession to spell right way.