redline etymology

Etymology: The term "redline" has multiple etymological origins:

• Racing: In motorsports, redline refers to the maximum revolutions per minute (RPM) that an engine can safely achieve before damage occurs. It is typically indicated by a red line on the tachometer.
• Engineering: In technical drawings, red lines are used to indicate specific features or boundaries, such as critical dimensions or hazard zones. This usage originates from the practice of using red pencils to mark important details in blueprints.

Meaning: In general, "redline" means:

• Limit: The maximum or critical point beyond which something should not progress or operate.
• Danger zone: A hazardous or risky situation or area.
• Pushing the limits: Exceeding or operating close to the maximum capacity or potential.

Origin: The term "redline" has been in use in racing since the early 20th century, and in engineering since even earlier. Its precise origin is unknown, but it likely derives from the use of red marks to indicate critical points or boundaries in both fields.

redline relate terms

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