hypermnesia
hy perm ne sia |ˌhīpərmˈnēZHə ˌhaɪpərmˈniʒə | ▶noun unusual power or enhancement of memory, typically under abnormal conditions such as trauma, hypnosis, or narcosis.
hypermnesia |ˌhʌɪpəmˈniːzɪə | ▶noun [ mass noun ] unusual power or enhancement of memory, typically under abnormal conditions such as trauma, hypnosis, or narcosis. ORIGIN mid 19th cent.: from hyper- + Greek mnēsia ‘memory ’.