Definition of electroencephalographist in English:
electroencephalographist
noun ɪˌlɛktrəʊɪnˌsɛfəˈlɒɡrəfɪstɪˌlɛktrəʊɪnˌkɛfəˈlɒɡrəfɪst
Medicine rare = electroencephalographer.
Origin
1940s; earliest use found in Brain: a journal of neurology. From electro- + encephalo- + -graphist, after electroencephalography.