Oxford Advanced American Dictionary

Definition of hyperbola noun from the Oxford Advanced Learner's Dictionary

hyperbola

noun
hyperbola pronunciation English haɪˈpɜːbələ hyperbola pronunciation American haɪˈpɜːrbələ
plural hyperbolas or hyperbolae
hyperbolae pronunciation English haɪˈpɜːbəli hyperbolae pronunciation American haɪˈpɜːrbəli
 
a symmetrical open curve