bimetallic strip: meaning, definition, pronunciation and examples
C1Technical, scientific
Quick answer
What does “bimetallic strip” mean?
A thin strip composed of two different metals bonded together, which bends when heated or cooled due to the differing thermal expansion coefficients of the two metals.
Audio
Pronunciation
Definition
Meaning and Definition
A thin strip composed of two different metals bonded together, which bends when heated or cooled due to the differing thermal expansion coefficients of the two metals.
A component used as a thermally-actuated switch or sensor, converting temperature changes into mechanical motion.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. The concept and term are identical in both varieties.
Connotations
Purely technical, with no cultural or regional connotations.
Frequency
Equally low-frequency and specialized in both dialects, appearing in relevant technical contexts.
Grammar
How to Use “bimetallic strip” in a Sentence
The [NOUN] uses/incorporates/contains a bimetallic strip.A bimetallic strip [VERB] when heated.[VERB] the bimetallic strip to [VERB] the mechanism.Vocabulary
Collocations
Examples
Examples of “bimetallic strip” in a Sentence
verb
British English
- The mechanism is designed to bimetallically actuate the switch.
- (Note: 'bimetallically' is extremely rare, 'actuated by a bimetallic strip' is preferred.)
American English
- The assembly bimetallically compensates for temperature fluctuations.
- (Note: This adverbial form is highly technical and rare.)
adverb
British English
- (No standard adverbial form. Concept expressed as 'via a bimetallic strip'.)
American English
- (No standard adverbial form. Concept expressed as 'using a bimetallic strip'.)
adjective
British English
- The bimetallic-strip thermostat is a classic design.
- We observed the bimetallic-strip effect in the laboratory.
American English
- The device uses a bimetallic-strip sensor.
- Bimetallic-strip technology is found in many common appliances.
Usage
Meaning in Context
Business
Rare, except in manufacturing or procurement contexts for appliances.
Academic
Common in physics and engineering textbooks and papers discussing thermal properties or control systems.
Everyday
Very rare. Might be encountered in instructions for older thermostats or kettles.
Technical
The primary context. Used in design, maintenance, and explanation of thermostats, circuit breakers, and temperature indicators.
Vocabulary
Synonyms of “bimetallic strip”
Strong
Neutral
Weak
Vocabulary
Antonyms of “bimetallic strip”
Watch out
Common Mistakes When Using “bimetallic strip”
- Using 'bimetallic' to describe any two metals, rather than their bonded, functional union.
- Pronouncing it as /ˈbaɪˌmet.əl.ɪk/ (with stress on the first syllable) instead of /ˌbaɪ.məˈtæl.ɪk/.
- Confusing its function with a simple thermometer.
FAQ
Frequently Asked Questions
Common pairs include steel and copper, or invar (a nickel-iron alloy with low expansion) and brass.
Yes, it responds to temperature change in either direction. Cooling will cause it to bend in the opposite direction from when it is heated.
Yes, though often replaced by digital sensors in high-end applications, they are still widely used in simple, reliable, and cost-effective thermostats, circuit breakers, and flame safety devices in gas appliances.
Coiling amplifies the small linear expansion of the metals into a larger, more useful rotational movement, making it more sensitive and easier to use as a switch.
A thin strip composed of two different metals bonded together, which bends when heated or cooled due to the differing thermal expansion coefficients of the two metals.
Bimetallic strip is usually technical, scientific in register.
Bimetallic strip: in British English it is pronounced /ˌbaɪ.məˈtæl.ɪk ˈstrɪp/, and in American English it is pronounced /ˌbaɪ.məˈtæl.ɪk ˈstrɪp/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. The term is purely technical.”
Learning
Memory Aids
Mnemonic
Imagine a strip made of two metals (bi-metallic). One metal expands like a jealous sibling when hot, pushing the strip to bend.
Conceptual Metaphor
A THERMOMETER IS A COILED SPRING (when the strip is coiled); TEMPERATURE IS PHYSICAL FORCE (causing bending).
Practice
Quiz
What is the primary principle behind the operation of a bimetallic strip?