[ lahyf-bluhd ]
/ ˈlaɪfˌblʌd /


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

Origin of lifeblood

First recorded in 1580–90; life + blood Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lifeblood

British Dictionary definitions for lifeblood


/ (ˈlaɪfˌblʌd) /


the blood, considered as vital to sustain life
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

Word Origin and History for lifeblood



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

Online Etymology Dictionary, © 2010 Douglas Harper