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O

O

35 4.9
A blood type with no A or B on the red cells that can be given to many people
  • noun
  • /oʊ/
  • Specialized
translation icon : grupo sanguíneo O
  • Type O blood types are more disposed to having autoimmune thyroid disorders and to being hypothyroid.
  • O blood
  • type O
  • O negative

Examples

  • I have some O negative laid aside for Bella.

  • We call them phenotypes, and we have Group A, Group B, group O, and group AB.

  • Maybe it's because I also have type O blood.

    Blog text (13)
  • After just a week of eating according to my Type O recommendations, I felt healthier than I had in years.

    Blog text (13)
  • O-negative blood is rare; people with this type of blood are considered universal donors.

    Blog text (15)
  • Ms. Orcutt's blood type is O-positive.

  • In the United States, the four blood type frequencies are O (44%), A (42%), B (10%), and AB (4%).

    Blog text (31)
  • We need two pints of O-negative in here stat.

  • When they typed my blood, the nurse got all excited and said, 'You're O-negative,' recalls PG Winstead Jr.

    Blog text (15)
  • A person with blood type O can safely donate to anyone in need of a transfusion.

Synonyms

group O
vsO
  • Specialized
47 3.7

A blood type with no A or B markers that can be given to most people

is the same meaning but phrased as a group name not a single letter
type O
vsO
  • Specialized
7 3.9

A blood group whose red cells have no A or B markers, so they can donate to anyone

is the same meaning but expressed as a single letter name

Idioms

uh-oh, Spaghetti-O
  • Baby Talk
9.9

A short phrase showing mild surprise or worry said in a playful way

Compounds

group O
  • Specialized
47 3.7

A blood type with no A or B markers that can be given to most people

46 2.8

A sweet, fruit flavored dessert made from a powder that becomes soft and wobbly

type O
  • Specialized
7 3.9

A blood group whose red cells have no A or B markers, so they can donate to anyone

O-ring
  • Specialized
1 6.1

A round rubber or plastic ring that seals a joint to stop leaks

O level
  • Archaic
1 7.9

A public exam in the UK for secondary students, now replaced by GCSEs

jack-o-lantern
  • Specialized
9.9

A large poisonous mushroom with an orange cap that glows at night

A large poisonous mushroom with orange caps that grows in tight groups and gills that glow in the dark

9.9

A state of becoming very jumpy and worried when stressed

penicillin O
  • Specialized
4.6

A medicine made by some mould that kills bacteria and is like penicillin G

A way to make people smell scents while watching films or TV

Surface Forms

O singular
Os plural

Etymology

The blood type O gets its name from the German word ohne, which means 'without', because these red blood cells have 'no' A or B markers. That's why people with O blood can often give blood to many other types.