# National Center for Biotechnology Information (NCBI) Organismal Classification (NCBITAXON)

> The NCBI Taxonomy Database is a curated classification and nomenclature for all of the organisms...

- Page: https://library.schematica.io/model/89961e5b3ced46c1afc20fd9b19cac2a
- Model type: Ontology
- License: CC0 1.0
- Access type: Free
- Access method: Download
- Model size: Huge
- Formats: UMLS
- Domains: Healthcare
- External link: https://bioportal.bioontology.org/ontologies/NCBITAXON
- Contact: NCBI information (info@ncbi.nlm.nih.gov)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | NCBITAXON |
| Description | The NCBI Taxonomy Database is a curated classification and nomenclature for all of the organisms in the public sequence databases. |
| Format | UMLS |
| Categories | Taxonomic Classification |
| Groups | Unified Medical Language System, OBO Foundry |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 736,927 |
| Individuals | 0 |
| Properties | 4 |
| Max Depth | 37 |
| Max Child Count | 1,569 |
| Average Child Count | 5 |
| Classes With One Child | 66,887 |
| Classes With More Than 25 Children | 4,722 |
| Classes With No Definition | 736,927 |

## Projects using NCBITAXON

- [ISA software suite](https://bioportal.bioontology.org/projects/ISS)
- [Epidemic Marketplace](https://bioportal.bioontology.org/projects/Epiwork)
- [Maggot](https://bioportal.bioontology.org/projects/Maggot)
- [MeRy-B](https://bioportal.bioontology.org/projects/MeRy-B)
- [Cellosaurus](https://bioportal.bioontology.org/projects/Cellosaurus)
- [eagle-i](https://bioportal.bioontology.org/projects/eagle-i)
- [Neuronal Morphologies and Species Metadata Classification System](https://bioportal.bioontology.org/projects/NMOSP)
- [PubChem](https://bioportal.bioontology.org/projects/PubChem)
- [Beta Cell Genomics database](https://bioportal.bioontology.org/projects/BCGD)
- [Electrophysiology Ontology](https://bioportal.bioontology.org/projects/EO)
- [XEML Interactive Designer](https://bioportal.bioontology.org/projects/XID)
- [Influenza Research Database](https://bioportal.bioontology.org/projects/IRD)
- [Virus Pathogen Resource](https://bioportal.bioontology.org/projects/ViPR)

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Source: https://library.schematica.io/model/89961e5b3ced46c1afc20fd9b19cac2a