An extreme fear or irrational dread of blood.
From hema- (blood, from Greek haima) plus -phobia (fear of, from Greek phobos meaning fear). This is a straightforward combination of Greek roots naming a specific phobia.
Hemaphobia is actually one of the most common phobias and involves a weird physiological trick—most phobias trigger a 'fight or flight' response, but hemaphobia uniquely triggers a fainting response!
Complete word intelligence in one call. Free tier — 50 lookups/day.