ATAXIAMETER

əˌtaksēˈaməd.ə(r) noun

or atax·ia·graph  ̷ ̷ˈ ̷ ̷ ̷ ̷əˌgraf

( -s )

Etymology: New Latin ataxia + English -meter or -graph

: an instrument for measuring involuntary tremor and unsteadiness (as the swaying of the whole body in the erect posture)