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[lahyf-bluhd] /ˈlaɪfˌblʌd/

the , considered as essential to maintain :
to spill one’s lifeblood in war.
a life-giving, vital, or animating element:
Agriculture is the lifeblood of the country.
the blood, considered as vital to sustain life
the essential or animating force

also life-blood, 1580s, “blood necessary for life,” from life (n.) + blood (n.). Figurative and transferred use is from 1590s.


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