Bienial or Biennial: How To spell?

The word Bienial is misspelled against Biennial, meaning "A plant that produces leaves and roots the first year and flowers and fruit the second."

Biennial has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings bie & ial which should not be misspelled with single 'N'
Wrong Spelling: bie-n-ial
Correct Spelling: bie-nn-ial
Find more wrongly spelled words of Biennial to spell it well.