The quality or condition of being split or divided into two parts; the state of having a bifid structure.
From Latin 'bifidus' (split in two) plus the suffix '-ity' (denoting a state or quality). It emerged as a technical term in anatomy and botany during the 18th-19th centuries.
Bifidity is especially important in medical contexts—doctors describe 'bifidity of the uvula' (the dangly part in the back of your throat) as a sign of certain genetic conditions, making this abstract noun actually quite practical.
Complete word intelligence in one call. Free tier — 50 lookups/day.