What does monophasic mean?
Monophasic describes something that has only one phase. The term is used chiefly in electrical engineering for a waveform, current, or power system whose behavior is based on a single phase, and in cardiac electrophysiology for an action potential recorded as one deflection rather than the opposing deflections of a biphasic signal. In ordinary conversation, the word is highly technical and usually unsuitable as a substitute for the more accessible “single-phase.” Its importance lies in distinguishing a simple one-phase signal from a polyphase one, whose components can be combined or analyzed separately. Knowing the term helps readers follow technical discussions of alternating current, signal processing, and electrophysiological recordings. It is a precise, neutral word rather than a synonym for “simple” or “one-sided,” and its specialized register makes it especially useful in scientific and engineering texts.
adjectiveHaving only one phase; consisting of or involving a single phase.
- Consisting of or involving a single phase, especially in electrical systems, alternating current, or signal processing.
- Describing an action potential recorded as one deflection rather than opposing deflections, especially in cardiac electrophysiology.
"The engineer compared the monophasic waveform with the more complex polyphase signal."
"The technician tested the monophasic waveform before installing the new signal processor."
"The electrophysiology study revealed a monophasic action potential in the affected tissue."
A monophasic signal tells one story in a single phase; its polyphase counterpart tells several at once.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does monophasic come from?
Monophasic combines the Greek-derived combining form mono-, from monos meaning “single” or “alone,” with phase, from Latin phasis, which was borrowed from Greek phasis meaning “appearance” or “phase.” The compound expresses the sense “having one phase” and belongs to the technical vocabulary developed for describing electrical signals and physiological activity.
How monophasic is actually used
This is specialized technical vocabulary used mainly in electrical engineering, signal processing, and cardiac electrophysiology. It is not an ordinary substitute for “simple” or “single,” and its register is normally formal and scientific.
Easily confused with monophasic
Monophasic describes a signal or system with one phase, whereas polyphasic describes one composed of multiple phases.
Monophonic audio reproduces one sound channel, while monophasic describes a waveform or electrical condition having one phase.