The word Bipinatifid is misspelled against Bipinnatifid, an adjective meaning "Doubly pinnatifid."
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Bipinnatifid has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings bipi & atifid which should not be misspelled with single 'N'
Wrong Spelling:  bipi-n-atifid 
Correct Spelling:  bipi-nn-atifid 
Find more wrongly spelled words of Bipinnatifid to spell it well.