Definition

Noun: - A buffer or allowance for error: The extra amount or degree of capacity, time, or resources included in a plan or design to account for uncertainty, unforeseen events, or potential failure, thereby ensuring safety and reliability.

Usage

The term "safety margin" is used to describe the deliberate extra capacity built into systems, calculations, or plans to prevent failure or danger. It is a critical concept in fields like engineering, finance, medicine, and project management.

Examples

• The bridge was designed with a significant safety margin to withstand earthquakes stronger than those predicted for the region.
• When calculating the required runway length, pilots must include a safety margin for adverse weather conditions.
• The doctor adjusted the dosage to maintain a therapeutic safety margin, avoiding levels that could be toxic.

Advanced Usage

• "To build in a safety margin": To intentionally include extra capacity or allowance during the design or planning phase.
• "A narrow/wide safety margin": Describes the size or adequacy of the buffer.

Variants and Related Words

• Margin of safety: A synonymous phrase used interchangeably with "safety margin," especially in engineering and investing.
• Safety factor: A related engineering term often expressed as a ratio (e.g., a safety factor of 3), quantifying the safety margin.

Synonyms

• Buffer
• Allowance
• Leeway
• Contingency

Related Idioms and Phrases

• "To err on the side of caution": This idiom describes the principle behind establishing a safety margin—choosing a safer, more conservative option when uncertain.

Noun

1. the margin required in order to insure safety
   • in engineering the margin of safety is the strength of the material minus the anticipated stress