The word Dichrous is misspelled against Dichroous, an adjective meaning "Dichroic."
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Dichroous has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings dichr & us which should not be misspelled with single 'O'
Wrong Spelling:  dichr-o-us 
Correct Spelling:  dichr-oo-us 
Check more misspelled words of Dichroous to spell it correct.