Lifeblood meaning

līfblŭd
Blood regarded as essential for life.
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An indispensable or vital part.

Capable workers are the lifeblood of the business.

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The blood necessary to life.
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A vital element or animating influence.
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Blood which is needed for continued life; blood regarded as the seat of life.
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(figuratively) That which is required for continued existence or function.

Gasoline is the lifeblood of the modern city.

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