audiogram
UK[ˈɔːdiəʊɡræm]US[ˈɔːdioʊɡræm]
n
A graphic record produced by an audiometer, showing hearing ability at different sound frequencies.
Morpheme Breakdown
audio
gram
audio
hearing
gram
record
Etymology
The word 'audiogram' is a modern scientific compound, precisely constructed from classical roots to describe a specific diagnostic tool. Its first element, 'audio-', originates from the Latin verb audire, meaning "to hear," a term itself descended from the Proto-Indo-European root h₂ew-, which conveyed the sense of perception, especially through the ears. The second element, '-gram', derives from the Greek gramma, meaning "a written character or record," tracing back to the verb graphein, "to scratch or write." Therefore, the literal construction "hearing-record" logically and transparently evolved into its current, specialized meaning: a written graph that records an individual's auditory sensitivity across a spectrum of sound frequencies.
Analysis
Structure: audio (hearing) + gram (record)
audio: From Latin audire (to hear). A combining form meaning "hearing" or "sound."
gram: From Greek gramma (something written, a letter). A combining form meaning "a record" or "something written."
Examples
The doctor reviewed the patient's audiogram to assess the degree of hearing loss.
A steep drop on the audiogram at high frequencies is often associated with noise-induced damage.
Newborn hearing screening programs typically generate an audiogram for each infant tested.