Statistics - 2025AB
Official Counts:
Release version:
2025AB
Release format:
RRF
Concepts:
3,488,973
Number of concept names (AUIs):
17,390,109
Number of distinct concept names (SUIs):
14,365,779
Number of distinct normalized concept names (LUIs):
13,147,486
Number of sources (distinct source families by language):
171
Number of sources contributing concept names:
190
Number of languages contributing concept names:
29
Name Count by Language:
| Language | Name Count | % of Metathesaurus |
|---|---|---|
| ENG | 10654777 | 61.27% |
| SPA | 1982512 | 11.4% |
| POR | 465039 | 2.67% |
| FRE | 463254 | 2.66% |
| DUT | 373909 | 2.15% |
| JPN | 353521 | 2.03% |
| RUS | 317219 | 1.82% |
| GER | 282494 | 1.62% |
| ITA | 273254 | 1.57% |
| CZE | 230416 | 1.32% |
| POL | 217085 | 1.25% |
| GRE | 210405 | 1.21% |
| SWE | 168790 | 0.97% |
| KOR | 157718 | 0.91% |
| EST | 148345 | 0.85% |
| FIN | 144543 | 0.83% |
| SCR | 129089 | 0.74% |
| LAV | 120459 | 0.69% |
| HUN | 119772 | 0.69% |
| LIT | 119054 | 0.68% |
| ISL | 119054 | 0.68% |
| ARA | 119054 | 0.68% |
| CHI | 92188 | 0.53% |
| NOR | 63797 | 0.37% |
| TUR | 49841 | 0.29% |
| UKR | 12617 | 0.07% |
| DAN | 723 | 0% |
| BAQ | 695 | 0% |
| HEB | 485 | 0% |
Name Count by Source Restriction Level (SRL):
| SRL | Source Count | % of Sources |
|---|---|---|
| 0 | 7473355 | 42.97% |
| 1 | 188203 | 1.08% |
| 2 | 22156 | 0.13% |
| 3 | 6022557 | 34.63% |
| 4 | 213586 | 1.23% |
| 9 | 3470252 | 19.96% |
| 0+4 | 7686941 | 44.2% |
Count of Atoms by Suppressibility:
| Suppressibility Status | Name Count | % of Metathesaurus |
|---|---|---|
| E | 9524 | 0.05% |
| O | 2095635 | 12.05% |
| N | 14936655 | 85.89% |
| Y | 348295 | 2% |
Source Counts by Language (from MRSAB):
| Language | Name count | % of Metathesaurus |
|---|---|---|
| ENG | 105 | 55.26% |
| SPA | 10 | 5.26% |
| GER | 8 | 4.21% |
| FRE | 8 | 4.21% |
| DUT | 7 | 3.68% |
| POR | 6 | 3.16% |
| ITA | 5 | 2.63% |
| KOR | 4 | 2.11% |
| RUS | 3 | 1.58% |
| SWE | 3 | 1.58% |
| FIN | 3 | 1.58% |
| POL | 3 | 1.58% |
| CZE | 2 | 1.05% |
| JPN | 2 | 1.05% |
| GRE | 2 | 1.05% |
| LAV | 2 | 1.05% |
| * | 2 | 1.05% |
| EST | 2 | 1.05% |
| HUN | 2 | 1.05% |
| SCR | 2 | 1.05% |
| NOR | 2 | 1.05% |
| HEB | 1 | 0.53% |
| LIT | 1 | 0.53% |
| DAN | 1 | 0.53% |
| ISL | 1 | 0.53% |
| BAQ | 1 | 0.53% |
| TUR | 1 | 0.53% |
| ARA | 1 | 0.53% |
| UKR | 1 | 0.53% |
| CHI | 1 | 0.53% |
*Note: 2 sources contribute relationships which have no associated language values.
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Last Reviewed: November 17, 2025