海かい馬ば体たいMeanings1nounhippocampal formationanatomyAnatomical term for the hippocampal formation, including the hippocampus proper, dentate gyrus, and subiculum.海かい馬ば体たいは記き憶おくの形けい成せいに重じゅう要ような役やく割わりを果はたす。The hippocampal formation plays an important role in memory formation.