Definition

Noun: A fundamental rule, law, or concept that explains how a system, device, or process functions and is adequate to permit work to be done. It describes the core operational theory behind something.

Usage

The term "working principle" is used to explain the foundational idea that makes a machine, method, or natural phenomenon operate. It is often discussed in engineering, physics, and technical contexts. - The working principle of a lever is based on mechanical advantage. - Understanding the working principle of the internal combustion engine is essential for mechanics.

Advanced Usage

• "underlying working principle": Emphasizes the most fundamental concept.
  • The course focuses on the underlying working principle of semiconductors.
• "explain/demonstrate the working principle": A common phrase used in instruction and documentation.
  • The manual includes a diagram to explain the working principle of the pump.

Variants and Related Words

• Operating principle (n): A very close synonym, often used interchangeably with "working principle."
  • The operating principle of this device is similar to that of a thermostat.
• Principle of operation (n): A more formal variant with the same meaning.
  • The report detailed the principle of operation for the new generator.

Synonyms

• Fundamental concept: The basic idea underlying a system.
• Operational rule: A rule governing how something works.
• Mechanism: The system of parts that operates together, often implying the principle behind it.

Related Phrases

• Based on the principle of: Used to describe what a system's function is founded upon.
  • This tool is based on the principle of hydraulic pressure.
• In principle: According to the basic theory or idea (a related but distinct phrase).
  • In principle, the design should work, but practical tests are needed.

Noun

1. a rule that is adequate to permit work to be done