Meaning of aphantasia in English:

aphantasia

Pronunciation /ˌeɪfanˈteɪzɪə/

noun

mass nounMedicine
  • The inability to form mental images of objects that are not present.

    • ‘if counting sheep is an abstract concept, or you are unable to visualize the faces of loved ones, you could have aphantasia’

Origin

Early 21st century from a-‘without, not’ + Greek phantasia ‘imagination, appearance’.