What does mono mean?
Mono is a compact word with several related uses. Most commonly encountered as the combining form mono-, it means “one,” “single,” or “alone,” and appears in vocabulary such as monaural, monogram, monologue, and monowheel. The spelling can also be used independently to describe a sound recording made with one audio channel, especially when contrasted with stereo. In this sense, mono often carries a nostalgic or deliberately vintage association because single-channel recording was the standard before stereo became widespread. As an adjective, mono can likewise mean single-channel or monaural. Its origin is Greek monos, meaning “single” or “alone,” a root that connects it to many English words concerning unity, solitude, and limitation. In general use, mono is especially associated with music, sound systems, recording formats, and audio software, while the hyphenated prefix is more formal and widespread.
A combining form meaning one, single, or alone.
"The design is monochrome and uses a mono typeface."
A monophonic sound recording or a single-channel audio recording.
"The original demo was preserved as a mono."
Monaural or relating to a single audio channel.
"The speaker produced a clear mono sound."
Usually informal and uncommon; “mono” more often functions as an adjective or combining form.
"These early recordings are available as monos."
The word mono comes from the Greek monos, meaning “single,” so it survives in terms describing one channel, one language, one eye, and many other things that come in ones.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mono come from?
The word derives from Greek monos, meaning “single,” “only,” or “alone.” The combining form mono- entered English through Latin and French usage and became productive in many English compounds. Its sound-recording sense developed from the broader idea of a single channel, paralleling the contrast between mono and stereo.
Related word forms
How mono is actually used
As a standalone noun and adjective, mono is mainly informal or technical, especially in audio contexts. In ordinary writing, the combining form mono- is more common, as in monaural, monophonic, and monoline.
Easily confused with mono
Mono can mean single-channel in sound or one-channel in general, whereas monochrome refers to an image or design using only one colour.
Mono as a combining form means one or single, while monopoly means exclusive control of a market or activity.