hysteresis
C2Technical, Academic, Scientific
Definition
Meaning
A phenomenon in which the state of a system depends on its history; the lagging of an effect behind its cause.
A property of systems where the output depends not only on the current input but also on the past sequence of inputs, often manifesting as a loop or path dependence where the relationship between variables differs when increasing versus decreasing.
Linguistics
Semantic Notes
Almost exclusively used in scientific, engineering, economic, and technical contexts. Describes a 'memory' effect or irreversibility in a system's response. Rarely used figuratively in general language.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning, spelling, or usage. Pronunciation differs slightly (see IPA).
Connotations
Neutral technical term in both varieties.
Frequency
Equally low-frequency and specialised in both UK and US English.
Vocabulary
Collocations
Grammar
Valency Patterns
[subject] exhibits hysteresis[subject] shows hysteresis in [process]the hysteresis of [system/property]a hysteresis loop/curve/modelVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[No established idioms. Term is purely technical.]”
Usage
Context Usage
Business
Rare; used in economics to describe persistent unemployment after a recession ends.
Academic
Common in physics, engineering, materials science, biology, and economics papers.
Everyday
Virtually never used.
Technical
Core term in describing magnetic materials, control systems, and physical/biological systems with memory.
Examples
By Part of Speech
verb
British English
- The system hysteresis under cyclic loading.
American English
- The model hysteresis under varying inputs.
adverb
British English
- [The word is not used as an adverb.]
American English
- [The word is not used as an adverb.]
adjective
British English
- We observed a hysteresis effect in the material.
- The hysteresis properties were analysed.
American English
- The control system has a hysteresis characteristic.
- We studied the hysteresis behaviour.
Examples
By CEFR Level
- [Too advanced for A2 level.]
- [Too advanced for B1 level.]
- The scientists discovered hysteresis in the climate data, showing that recovery from warming takes longer than the initial heating.
- Economic hysteresis explains why unemployment can remain high long after a recession technically ends, as workers' skills deteriorate.
Learning
Memory Aids
Mnemonic
Think of HYSTERESIS as 'HIS-STORY-SIS' – the system's current state depends on its 'history' (the story of what happened before).
Conceptual Metaphor
A SYSTEM'S MEMORY (the system 'remembers' where it has been, like a path in the woods leaving a trace).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with истерия (isteriya) meaning 'hysteria' or 'panic attack'. The Russian technical term is гистерезис (gisterezis).
Common Mistakes
- Misspelling as 'histeresis' or 'hystersis'.
- Confusing it with 'hysteria'.
- Using it as a general synonym for 'lag' in non-technical contexts.
Practice
Quiz
In which context is 'hysteresis' LEAST likely to be used correctly?
FAQ
Frequently Asked Questions
A thermostat: It turns the heater on at 18°C and off at 21°C. The temperature at which it switches depends on whether the temperature is rising or falling, creating a 'lag' or memory effect.
No, they are false friends. 'Hysteria' comes from Greek 'hystera' (womb), historically linked to emotional excess. 'Hysteresis' comes from Greek 'hysteresis' (a coming late), from 'hysteros' (later).
Yes. In engineering, hysteresis can be designed into systems (like Schmitt triggers in electronics) to prevent rapid, unwanted switching due to noise.
No. While most common in physics and engineering, the concept is applied in economics (labour market hysteresis), biology (protein folding), and even sociology to describe systems with path dependence.