Definition

Noun: * Stillness; absence of wind: "Calm air" refers to a state of the atmosphere where there is no perceptible movement of wind. It is characterized by stillness and tranquility. * A specific meteorological condition: In technical contexts, it denotes wind moving at a speed of less than 1 knot, classified as 0 on the Beaufort scale of wind force.

Usage Examples

• Noun:
  • After the storm passed, a period of calm air settled over the lake.
  • The sailor waited for calm air before attempting to dock the small boat.
  • On the Beaufort scale, calm air is indicated by smoke rising vertically.

Advanced Usage

• "dead calm air": An emphatic phrase describing a complete and absolute absence of wind.
  • The sea was like a mirror under the dead calm air.

Variants and Related Words

• Calm (noun/adjective): The general state of peace, quiet, and absence of disturbance, which can apply to weather, seas, or emotions.
  • The calm before the storm was eerie.
• Stillness (noun): A synonym emphasizing the lack of motion or sound.
  • The stillness of the calm air was profound.

Synonyms

• Still air
• Windlessness
• Lull (a temporary period of calm)

Antonyms

• Wind
• Breeze
• Gale
• Storm

Related Phrases

• Flat calm: Often used in nautical contexts to describe a complete absence of wind and waves.
  • The yacht was stranded in a flat calm for two days.

Noun

1. wind moving at less than 1 knot; 0 on the Beaufort scale