Iradiance or Irradiance: How To spell?

The word Iradiance is misspelled against Irradiance, meaning "Luster."

Irradiance has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings i & adiance which should not be misspelled with single 'R'
Wrong Spelling:  i-r-adiance 
Correct Spelling:  i-rr-adiance 
Find more wrongly spelled words of Irradiance to spell it well.

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