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blood

UK/blʌd/US/blʌd/
nounA12 meaningsOne of the most common words in English · #252 of 15,258leans spoken

Other forms: bloods

Blood is the red liquid that moves through your body. Lose blood, a blood test, blood pressure.

The compounds are everywhere in medicine: blood type, blood count, blood sugar, blood donor. Figuratively, blood means family descent — blood relative, blood is thicker than water, of royal blood — and new blood means new people brought into a group. Note in cold blood, meaning deliberately and without feeling; bad blood, meaning long-standing ill feeling; and make your blood boil.

Wesalius · CC BY-SA 3.0

Definitions of blood

  1. 1nounbloodThe red liquid that moves through the body.A1~98%

    “He lost about two pints of blood before anybody found him.”

  2. 2nounfamilyFamily descent.B2~2%

    “They are related by blood and have not spoken in years.”

Shares are an estimate: a language model read 11 sentences found in the wild and placed 11 of them on a sense — a count of our sample, not a measurement of English.

blood is a body fluid, or descent.

Phrases it lives in

  • in cold blood — deliberately and without any feeling at the time
  • bad blood — long-standing resentment between people

Where it comes from

Old English blod is Germanic and has no clear relatives outside the family, which is unusual for so basic a word. Latin used sanguis, which gives English sanguine, consanguinity and sangfroid, so the language has two unrelated blood vocabularies.

  1. Middle English

    blood

  2. English, today

    blood

From Middle English blood. From Middle English blood, from Old English blōd, from Proto-West Germanic blōd, from Proto-Germanic blōþą, possibly from Proto-Indo-European bʰel- ("to swell") + -ó- (thematic vowel) + -to (nominalizer), i.e. "that which bursts out". Cognate with Scots blude, bluid (“blood”), frr blud, blödj, Blör (“blood”), stq Bloud (“blood”), West Frisian bloed (“blood”), cim pluat, pluut (“blood”), Dutch bloed (“blood”), German Blut (“blood”), German Low German Blood, Bloot (“blood”), lb Blutt (“blood”), wym błüt (“blood”), Yiddish בלוט (“blood”), Danish, Norwegian Bokmål, Norwegian Nynorsk and Swedish blod (“blood”), Faroese and Icelandic blóð (“blood”), gme-cgo plut (“blood”), Gothic 𐌱𐌻𐍉𐌸 (“blood”).

Etymology from Wiktionary, CC BY-SA

Practised in Body & Health

Practise this word

blood in the wild

  • Blood is composed of blood cells suspended in plasma.

    Blood

  • White blood cells help to resist infections and parasites.

    Blood

  • In a healthy heart, blood flows one way through the heart due to heart valves, which prevent backflow.

    Heart

  • Several of these red blood cell surface antigens can stem from one allele (or an alternative version of a gene) and collectively form a blood group system.

    Blood type

  • As of June 2025, a total of 48 human blood group systems are recognized by the International Society of Blood Transfusion (ISBT).

    Blood type

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From Wikipedia, CC BY-SA 4.0. These sentences were written by other people about their own subjects; they are here to show the word at work, not as anybody’s opinion.

From Project Gutenberg, public domain. These sentences are from real books, shown to illustrate the word at work.

Related words

  • bloodbath
  • bloodline
  • bloodshot
  • bloodstain
  • bloodstock
  • bloodstream
  • bloodthirsty
  • bloodcurdling
  • blood pressure
  • your flesh and blood