Definition

1. Adjective:
   • Impermeable to gases; not allowing air or gas to pass in or out: Describes a seal, container, or barrier that prevents the passage of gases.

Usage

• The term "gas-tight" is used to describe the quality of an enclosure or seal. It is often applied in technical, scientific, and industrial contexts to ensure safety or maintain specific atmospheric conditions.
• It functions as an adjective and typically precedes a noun (e.g., a gas-tight seal) or follows a linking verb (e.g., The chamber is gas-tight).

Examples

• Adjective:
  • A gas-tight seal is essential for the experiment to prevent contamination.
  • The storage containers must be completely gas-tight to preserve the inert atmosphere.
  • Is this door gas-tight enough to contain the potential leak?

Advanced Usage

• Technical Specification: Often used in engineering and safety documentation to specify performance requirements.
  • The design calls for a gas-tight barrier between the reactor and the control room.
• Compound Adjective: Can be combined with other words to form technical descriptors, though the core meaning remains.
  • The gas-tight integrity of the system was verified.

Variants and Related Words

• Gasproof (adj.): A synonym with identical meaning (not allowing gas to pass through).
  • Gasproof packaging is used for sensitive electronic components.
• Airtight (adj.): Specifically impermeable to air; often used interchangeably with "gas-tight" in casual contexts, though "gas-tight" can imply a broader range of gases.
  • An airtight container keeps food fresh.

Synonyms

• Hermetic: Completely sealed, especially against the escape or entry of air.
• Sealed: Closed securely to prevent entry or escape.
• Impermeable: Not allowing fluid or gas to pass through.

Related Phrases

• Gas-tight seal: A seal that prevents gas leakage.
  • Ensure the lid forms a gas-tight seal before proceeding.
• Gas-tight compartment: An enclosed space designed to be impervious to gases.
  • The chemical must be stored in a gas-tight compartment.

Notes

• The term is a compound adjective formed from "gas" + "tight." Its primary and only meaning relates to the impermeability of gases. It does not have phrasal verbs or idioms associated with it.

Adjective

1. not allowing air or gas to pass in or out