noun, often attributive
\ ˈbləd How to pronounce blood (audio) \

Definition of blood

 (Entry 1 of 2)

1a(1) : the fluid that circulates in the heart, arteries, capillaries, and veins of a vertebrate animal carrying nourishment and oxygen to and bringing away waste products from all parts of the body
(2) : a comparable fluid of an invertebrate
b : a fluid resembling blood
2 : the shedding of blood also : the taking of life
3a : lifeblood broadly : life
b : human stock or lineage especially : royal lineage a prince of the blood
c : relationship by descent from a common ancestor : kinship
d : persons related through common descent : kindred
e(1) : honorable or high birth or descent
(2) : descent from parents of recognized breed or pedigree
4a : blood regarded as the seat of the emotions : temper
b obsolete : lust
c : a showy foppish man : rake
5 : members of a team, staff, or organization : personnel a company in need of new blood
6 informal : an African American male used especially among black people
in one's blood
: ingrained in one's nature : occurring as an innate or seemingly hereditary principle, inclination, or talent with two parents who are painters, art is in her blood


blooded; blooding; bloods

Definition of blood (Entry 2 of 2)

transitive verb

1 : to stain or wet with blood
2 archaic : bleed sense 1
3 : to expose (a hunting dog) to sight, scent, or taste of the blood of its prey
4 : to give experience to troops blooded in battle

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Examples of blood in a Sentence

Noun The accident victim has already lost a lot of blood. the blood in your veins
Recent Examples on the Web: Noun Solving a problem like this is a major coup and a fun thing on its own, but much of the study of these nano-scale fluid dynamics relates back to health, like how blood flows through vessels in the human body. Caroline Delbert, Popular Mechanics, "College Student Solves 100-Year-Old Physics Problem," 2 Dec. 2019 The balloon keeps blood flowing by inflating and deflating in concert with a person's heartbeat. Dennis Thompson,, "Expensive device used in heart procedures might pose dangers: Study," 28 Nov. 2019 According to the Mayo Clinic, angina is chest pain that is caused by a reduced blood flow to the heart. Hannah Yasharoff, USA TODAY, "'It's been a rough year': Larry King reveals he had a stroke in March, was in a coma," 28 Nov. 2019 That trial will use an imaging technique known as transcranial doppler to measure improvement in blood flow to demonstrate stroke reduction. Adam Feuerstein, STAT, "Global Blood secures FDA approval for new pill to treat sickle cell disease," 25 Nov. 2019 According to the Mayo Clinic, moyamoya disease, the cause of which is unknown, is an uncommon blood vessel disorder where the carotid artery becomes blocked or narrowed, resulting in a loss of blood flow to the brain. Benjamin Vanhoose,, "The Good Doctor Star Will Yun Lee Opens Up About His Son's Rare Condition and 'Warrior Spirit'," 21 Nov. 2019 The team suspects that the animal’s stretchy aortic arch, part of the main artery entering the heart, continues to slowly contract between heartbeats, maintaining blood flow to the animal’s body. Jason Daley, Smithsonian, "Researchers Measure a Wild Blue Whale’s Heart Rate for the First Time," 19 Nov. 2019 Removing the blockage is critical, but even after blood flow is restored, complications brought on by inflammation can lead to more cell death. Diana Kwon, Scientific American, "Targeting Gut Microbes May Help Stroke Recovery," 19 Nov. 2019 All 5,179 participants had stress tests, usually done on a treadmill, that suggested blood flow was crimped., "The results challenge medical dogma and call into question some of the most common practices in heart care. They are the strongest evidence yet that tens of thousands of costly stent procedures and bypass operations each year are unnecessary or premature for people with stable disease.," 17 Nov. 2019 Recent Examples on the Web: Verb Liverpool's team had an average age of 23 years and 122 days, while Unai Emery blooded 18-year-olds Gabriel Martinelli and Bukayo Saka, alongside 20 year-old Joe Willock., "Jurgen Klopp Hails Gabriel Martinelli as 'Talent of the Century' After Thrilling Carabao Cup Clash," 1 Nov. 2019 In return for this faith from the club, Lampard must stick with his young players, blooding them against top quality opposition., "Frank Lampard Must Keep Faith in Chelsea's Emerging Youth - Despite Man Utd Thumping," 13 Aug. 2019 Travis Tritten: What that tells us is that these are two people who are equally cold blooded. Matt Goldfarb, CBS News, "Investigation of airman's brutal murder in Japan uncovers deception, fraud and witchcraft," 19 June 2019 Rudy was caught by an inadvertent boot from Swedish centre back Andreas Granqvist after 30 minutes, and was left seriously blooded as a result., "Germany Reveal Sebastian Rudy Suffered a Broken Nose During World Cup Clash Against Sweden," 24 June 2018 Liverpool Football Club is synonymous with blooding young talent into the first team with devastating effect., "​Trent Alexander-Arnold Proves Why Liverpool Must Give Youth a Chance," 12 May 2018 Caucasian means weak blooded, weak bone, stale face. Fox News, "Rudy Giuliani: Mueller probe should never have taken place," 31 May 2018 At the other end of play, Winslow came up blooded by the eye in a collison that left a few players on the floor. Dave Hyde,, "Hyde5: Five thoughts on Game 4, Heat season on the edge," 21 Apr. 2018 Iniesta was handed his first-team debut for Barça in 2002 by manager Louis van Gaal, the same coach who had blooded Xavi during an earlier spell in charge., "'Cancer of Barça': Camp Nou Legend Xavi Recalls Harsh Criticism He Suffered Early in His Career," 20 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blood.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of blood


before the 12th century, in the meaning defined at sense 1a(1)


1590, in the meaning defined at sense 1

History and Etymology for blood


Middle English, from Old English blōd; akin to Old High German bluot blood

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Time Traveler for blood

Time Traveler

The first known use of blood was before the 12th century

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Statistics for blood

Last Updated

8 Dec 2019

Cite this Entry

“Blood.” The Dictionary, Merriam-Webster Inc., Accessed 14 December 2019.

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More Definitions for blood


How to pronounce blood (audio)

English Language Learners Definition of blood

: the red liquid that flows through the bodies of people and animals
: members of a team, company, or organization


\ ˈbləd How to pronounce blood (audio) \

Kids Definition of blood

1 : the red fluid that circulates in the heart, arteries, capillaries, and veins of persons and animals and that brings nourishment and oxygen to and carries away waste products from all parts of the body
2 : relationship through a common ancestor : kinship She is my aunt by marriage, not by blood.

Other Words from blood

blooded \ ˈbləd-​əd \ adjective


noun, often attributive
\ ˈbləd How to pronounce blood (audio) \

Medical Definition of blood

1 : the fluid that circulates in the heart, arteries, capillaries, and veins of a vertebrate animal carrying nourishment and oxygen to and bringing away waste products from all parts of the body
2 : a fluid of an invertebrate comparable to blood
3 : blood regarded in medieval physiology as one of the four humors and believed to be the seat of the emotions
4 : descent from parents of recognized breed or pedigree

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More from Merriam-Webster on blood

Thesaurus: All synonyms and antonyms for blood

Rhyming Dictionary: Words that rhyme with blood

Spanish Central: Translation of blood

Nglish: Translation of blood for Spanish Speakers

Britannica English: Translation of blood for Arabic Speakers

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