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O

human blood type
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O

Summary

O is a human blood type[1]. O is known by 23 alternative names across languages and contexts.[2]

Key Facts

  • O's instance of is recorded as human blood type[3].
  • O is part of ABO blood group system[4].
  • O's Commons category is recorded as Bloodtype O[5].
  • O's Unicode character is recorded as 🅾[6].
  • O's different from is recorded as O[7].

Body

Definition and Type

O's instance of is recorded as human blood type[3].

Use and Application

O is part of ABO blood group system[4].

Why It Matters

O is known by 23 alternative names across languages and contexts.[2]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). O. Retrieved October 5, 2026, from https://4ort.xyz/entity/type-o
MLA “O.” 4ort.xyz Knowledge Graph, 4ort.xyz, 5 Oct. 2026, https://4ort.xyz/entity/type-o.
BibTeX @misc{4ortxyz_type-o_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{O}}, year = {2026}, url = {https://4ort.xyz/entity/type-o}, note = {Accessed: 2026-10-05}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): O — https://4ort.xyz/entity/type-o (retrieved 2026-10-05)

Canonical URL: https://4ort.xyz/entity/type-o · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 8h ago · MatSuBot bot · 2026-10-05 view diff on Wikidata ↗
    Freebase id → /m/0nbm6lv
    Wikidata description → human blood type
    Different from → O
    Sciencedirect topic id → biochemistry-genetics-and-molecular-biology/blood-group-o, immunology-and-microbiology/blood-group-o, medicine-and-dentistry/blood-group-o +1
    + 12 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-short:0||uk, rsk */ import labels from sitelinks; cleanup"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.