Dictionary.com
Thesaurus.com
Synonyms

lifeblood

American  
[lahyf-bluhd] / ˈlaɪfˌblʌd /

noun

  1. the blood, considered as essential to maintain life.

    to spill one's lifeblood in war.

  2. a life-giving, vital, or animating element.

    Agriculture is the lifeblood of the country.


lifeblood British  
/ ˈlaɪfˌblʌd /

noun

  1. the blood, considered as vital to sustain life

  2. the essential or animating force

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of lifeblood

First recorded in 1580–90; life + blood

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

PdVSA is effectively Venezuela’s alter ego, tied at the hip given that oil remains the lifeblood of the economy.

From Barron's

PdVSA is effectively Venezuela’s alter ego, tied at the hip given that oil remains the lifeblood of the economy.

From Barron's

Energy exports are the lifeblood of the Russian economy.

From The Wall Street Journal

That is part of the lifeblood of the state’s culture, cuisine, commerce and sense of possibility, and those students are now our teachers, nurses, physicians, engineers, entrepreneurs and tech whizzes.

From Los Angeles Times

Investment, the lifeblood of economic growth, logged the worst decline in decades in recent months.

From Barron's