Definition

Noun 1. A state of intense heat, specifically the temperature at which a substance glows with a red color: This refers to the physical condition of being extremely hot, typically associated with metals or materials heated to the point where they emit visible red light. 2. The visible red glow of a very hot object: This refers to the color itself, which is a bright, luminous red characteristic of objects at a high temperature.

Usage Examples

• The blacksmith worked the iron at a red heat before shaping it on the anvil.
• The ceramic had to be fired to a red heat in the kiln to achieve its final hardness.
• In the darkness of the forge, the only light came from the red heat of the coals.

Advanced Usage

• The term is often used in metallurgy, ceramics, and materials science to describe a specific stage of heating, below "white heat."
• It can be used metaphorically to describe a state of intense emotion, passion, or activity, though this is an extended figurative use of the core meaning.
  • The debate reached a red heat as the candidates argued fiercely.

Variants and Related Words

• White heat: (noun) An even higher temperature at which a substance glows white; often used metaphorically for a state of maximum intensity or activity.
• Incandescence: (noun) The emission of light by an object heated to a high temperature. Red heat is a form of incandescence.
• Glowing: (adjective/noun) Emitting light, especially as a result of being heated.

Synonyms

• Incandescence
• Glow
• High temperature (in the context of heat)

Related Idioms and Phrases

• To bring/pull something to a red heat: To heat something until it glows red.
  • The smith brought the metal to a red heat before quenching it.
• At a red heat: In a state of being red-hot.
  • The wires were at a red heat due to the electrical overload.

Noun

1. the heat or the color of fire