hearing-aid
UK[ˈhɪər.ɪŋ ˌeɪd]US[ˈhɪr.ɪŋ ˌeɪd]
n
A small electronic device that fits in or behind the ear, worn to make sounds louder for a person with hearing loss.
Morpheme Breakdown
hearing
aid
hearing
sense
aid
sense
Etymology
The term is a transparent Modern English compound, formed by directly combining two common nouns to describe the device's function. The first element, 'hearing', originates from the Proto-Germanic hauzijaną, related to the act of auditory perception. The second element, 'aid', traces back to Latin adjūtāre, meaning to give help. The compound's logic is perfectly literal: it is an 'aid for hearing'. This straightforward descriptive naming convention is typical for practical inventions, where the device's purpose is explicitly stated in its name, evolving from separate concepts of sensory perception and assistance into a single, unified term for a medical tool.
Analysis
Structure: hearing (sense) + aid (sense)
- hearing: From Old English hīeran (to hear). A gerund/verbal noun form, indicating the act or faculty of perceiving sound.
- aid: From Old French aide, from Latin adjūtāre (to help). A noun meaning help or assistance.
Examples
My grandfather's new digital hearing-aid has dramatically improved his quality of life.
Many modern hearing-aids can connect wirelessly to smartphones and televisions.
The audiologist adjusted the settings on her hearing-aid for a better fit in noisy environments.