echoencephalograph
ech o en ceph a lo graph |ˌekōenˈsefələˌgraf ˌɛkoʊɛnˈsɛfələɡræf |(abbr.: EEG ) ▶noun an instrument used to examine the skull and brain by means of reflected ultrasonic waves as part of a painless and noninvasive procedure. DERIVATIVES ech o en ceph a lo graph ic |-ˌsefələˈgrafik |adjective
echoencephalography
ech o en ceph a log ra phy |ˌekōenˌsefəˈlägrəfē ˌɛkoʊˌɛnsəfəˈlɑɡrəfi | ▶noun Medicine the use of ultrasound waves to investigate structures within the skull.