vacancy

type of point defect in a crystal, in which an atom is missing from one of the lattice sites
Thing general Q899743
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Summary

vacancy ranks in the top 2% of general entities by monthly Wikipedia readership (169 views/month).[1]

Key Facts

  • vacancy is a type of point defect[2].
  • vacancy is a type of dislocation[3].
  • vacancy's Commons category is recorded as Vacancy defects in crystals[4].
  • vacancy's notation is recorded as □[5].
  • vacancy's notation is recorded as 𝑉[6].
  • vacancy's equivalent class is recorded as https://w3id.org/pmd/co/PMD_0020224[7].
  • vacancy's studied by is recorded as materials science[8].
  • vacancy's studied by is recorded as crystallography[9].

Body

Definition and Type

Recorded subclass of include point defect[2] and dislocation[3].

Influence

Things named for vacancy include hydrokenoelsmoreite[10], a mineral species[11]; hydroxykenomicrolite[12], a mineral species[13]; and hydrokenoralstonite[14], a mineral species[15].

Why It Matters

vacancy ranks in the top 2% of general entities by monthly Wikipedia readership (169 views/month).[1] vacancy has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[16] vacancy is known by 27 alternative names across languages and contexts.[17]

Entities named for vacancy include hydrokenoelsmoreite[10], a mineral species[11]; hydroxykenomicrolite[12], a mineral species[13]; and hydrokenoralstonite[14], a mineral species[15].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . IUPAC nomenclature of inorganic chemistry 2005. old.iupac.org. Provenance: wikidata.org.
  5. [6] ↑ . IUPAC nomenclature of inorganic chemistry 2005. old.iupac.org. Provenance: wikidata.org.
  6. [7] ↑ . Q141572184. wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [10] ↑ . wikidata.org. → on this site
  2. [12] ↑ . wikidata.org. → on this site
  3. [14] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [11] ↑ . Wikidata. wikidata.org. → on this site
  2. [13] ↑ . Wikidata. wikidata.org. → on this site
  3. [15] ↑ . Wikidata. wikidata.org. → on this site

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [16] ↑ . Wikidata sitelinks. wikidata.org.
  3. [17] ↑ . 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). vacancy. Retrieved October 17, 2026, from https://4ort.xyz/entity/vacancy-q899743
MLA “vacancy.” 4ort.xyz Knowledge Graph, 4ort.xyz, 17 Oct. 2026, https://4ort.xyz/entity/vacancy-q899743.
BibTeX @misc{4ortxyz_vacancy-q899743_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{vacancy}}, year = {2026}, url = {https://4ort.xyz/entity/vacancy-q899743}, note = {Accessed: 2026-10-17}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): vacancy — https://4ort.xyz/entity/vacancy-q899743 (retrieved 2026-10-17)

Canonical URL: https://4ort.xyz/entity/vacancy-q899743 · 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. 20d ago · عُثمان · 2026-09-27 view diff on Wikidata ↗
    Subclass of → point defect, dislocation
    Notation → □, 𝑉
    Wikipedia languages → ['ar', 'commons', 'de', 'en', 'et', 'fa', 'fi', 'fr', 'he', 'it', 'kk', 'ky', 'n
    Equivalent class → https://w3id.org/pmd/co/PMD_0020224
    + 3 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ Equivalent class: https://w3id.org/pmd/co/PMD_0020224"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.