Derich

//ˌdiˈɹɪt͡ʃ// verb

Definitions

Verb
  1. 1
    To make the air–fuel ratio (of a jet engine or a carburetor) leaner (less rich). rare

    "The fuel derich system on each engine protected against severe turbine over-temperature. If the engine's EGT indicator reached 860 degrees Celsius while the system was armed, the air/fuel ratio in the engine was automatically reduced (deriched)."

Etymology

From de- + rich.

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