Terestrial or Terrestrial: How To spell?
The word Terestrial is misspelled against Terrestrial, a noun meaning "An inhabitant of the earth."
Terrestrial has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings te & estrial which should not be misspelled with single 'R'
Wrong Spelling:  te-r-estrial  Correct Spelling:  te-rr-estrial 
Find more wrongly spelled words of Terrestrial to spell it well.