Piniform or Pinniform: How To spell?

The word Piniform is misspelled against Pinniform, an adjective meaning "Shaped like a fin or feather."

Pinniform has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings pi & iform which should not be misspelled with single 'N'
Wrong Spelling: pi-n-iform
Correct Spelling: pi-nn-iform
Find more incorrect spellings of Pinniform to spell right way.