The word Terestrious is misspelled against Terrestrious, an adjective meaning "Terrestrial."
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Terrestrious has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings te & estrious which should not be misspelled with single 'R'
Wrong Spelling:  te-r-estrious 
Correct Spelling:  te-rr-estrious 
Check more misspelled words of Terrestrious to spell it correct.