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Glite Dictionary
group O

group O

47 3.7
A blood type with no A or B markers that can be given to most people
  • noun
  • /ɡruːp oʊ/
  • Specialized
translation icon : grupo sanguíneo O
  • Researchers found that individuals with group O blood have lower risks of certain diseases.

Examples

  • Patients with group O blood are often sought after for transfusions due to their universal donor status.

  • Health promotion programs need to address the needs of this group of people better.

    Academic text (1994)

  • MJ-12 was a group of people within the government.

    UFOs: The Secret History (2010)

  • It was just a group of people that got together and said, "Look, this is ridiculous."

    FrackNation (2013)

  • A draft of the survey was evaluated by a group of 10 teachers.

    Academic text (2013)

  • A few days later, the Muwaini sent a group of seven horsemen to our camp.

    Academic text (1990)

  • One drawback of the above single-subject design studies can be addressed with a larger group of participants.

    Academic text (2013)

  • Slowly, Gerard separates from the group of deputies and follows the man down the hall.

    Fiction book (1993)

  • The Navajo chatted cheerfully with the large group of white missionaries there for the day.

    Fiction book (1991)

  • Donating blood is easy for anyone with group O, as they can help any patient in need.

Synonyms

O
vsgroup O
  • Specialized
35 4.9

A blood type with no A or B on the red cells that can be given to many people

is the same meaning but shown as a single letter symbol
type O
vsgroup O
  • 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 concept but uses a longer written label

Surface Forms

group O singular
group Os plural

Morphology

group + O

The meaning is directly compositional: 'group' (a category) combined with 'O' (the specific blood type) yields the category of blood type O. This is a standard noun + label/type construction (e.g., 'group A', 'type O') that a B1 learner who knows both constituents will readily understand.

Etymology

Group O may come from the old German word 'ohne', which means 'without', because scientists used the letter O to show these red cells are without A and B markers. That's why group O blood can often be given to many people and is called a 'universal donor'.