An extreme or irrational fear of heights or of falling; fear of being at great depths or elevations.
From Greek 'batos' (deep or high) and 'phobos' (fear). The Greek root 'batos' can refer to both depths and heights, reflecting the fear of either extreme vertical position.
Batophobia is different from acrophobia because it's a fear of the concept of depth or height rather than of looking down—some people with batophobia can't even think about being high up without feeling dizzy.
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