sonograph

[son-uh-graf, -grahf]

noun

Physics.

1. an instrument that produces a graphic representation of sound.

Word History and Origins

Origin of sonograph¹

First recorded in 1955–60; sono- + -graph

Example Sentences

We should point out, however, that you have referred to the equipment in question as a Dictaphone, which is the trade name of our good friends, the Dictaphone Corp., not of our firm, Sonograph Ltd., which is the major Canadian company in the dictating-machine field here.

From Time Magazine Archive