Symetral or Symmetral: How To spell?
The word Symetral is misspelled against Symmetral, an adjective meaning "Commensurable; symmetrical."
Symmetral has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings sy & etral which should not be misspelled with single 'M'
Wrong Spelling:  sy-m-etral  Correct Spelling:  sy-mm-etral 
Explore spell check of Symmetral to spell without errors.