The word Imensurable is misspelled against Immensurable, an adjective meaning "Immeasurable."
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Immensurable has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings i & ensurable which should not be misspelled with single 'M'
Wrong Spelling:  i-m-ensurable 
Correct Spelling:  i-mm-ensurable 
Check more misspelled words of Immensurable to spell it correct.