insulator
/'insjuleitə/
Definition
- Noun:
- A material or device that prevents or reduces the transfer of electricity, heat, or sound: An "insulator" is a substance or object that does not allow electricity, heat, or sound to pass through it easily. Its primary function is to block or slow down the flow of energy.
- A non-conductive material: In physics and engineering, an "insulator" specifically refers to a material with very low electrical or thermal conductivity, such as rubber, glass, or plastic.
Examples of Usage
- Noun:
- Rubber is an effective electrical insulator, which is why it is used to coat electrical wires.
- Fiberglass is a common thermal insulator used in building walls to keep homes warm.
- The technician replaced the cracked ceramic insulator on the power line.
Advanced Usage
- "To act as an insulator": To serve the function of preventing the transfer of energy.
- The thick wool coat acted as an insulator against the freezing wind.
- In a figurative sense: Something that prevents communication or connection.
- His pride acted as an insulator, preventing him from asking for help.
Variants and Related Words
- Insulate (verb): To cover or surround something with a material that stops the transfer of heat, electricity, or sound.
- We need to insulate the attic before winter.
- Insulation (noun): The material used for insulating, or the state of being insulated.
- The house's insulation is very poor, so the heating bills are high.
- Insulative (adjective): Having the properties of an insulator.
- The material's insulative properties were tested in the lab.
Synonyms
- Non-conductor: A substance that does not conduct electricity or heat.
- Dielectric (technical): An insulating material or a very poor conductor of electric current.
Related Phrases
- Insulator string (noun phrase): A series of insulators used in high-voltage power lines.
- The storm damaged an insulator string, causing a power outage.
- Pin insulator (noun phrase): A type of insulator mounted on a pin for supporting electrical wires.
- The old telegraph line used simple pin insulators.
Related Idioms
(Note: There are no common idioms that use the word "insulator" as a core component. The word is primarily technical.)
Noun
-
a material such as glass or porcelain with negligible electrical or thermal conductivity
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