Lifeblood definition

Lifeblood

Topics Lifeblood Definition

WordNet

noun

(1) An essential or life-giving force

"Water is the lifeblood of India"

(2) The blood considered as the seat of vitality

WiktionaryText

Noun

The blood needed for continued life; that blood which if lost causes death.
That which is required for continued existence or function.

Gasoline is the lifeblood of the modern city.

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