--> Circummeridian has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings circu & eridian which should not be misspelled with single 'M'
Wrong Spelling:  circu-m-eridian 
Correct Spelling:  circu-mm-eridian 
Check more misspelled words of Circummeridian to spell it correct.