Official Counts:
Release version:
2025AA
Release format:
RRF
Concepts:
3,454,294
Number of concept names (AUIs):
17,144,356
Number of distinct concept names (SUIs):
14,157,485
Number of distinct normalized concept names (LUIs):
12,953,465
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 | 10492333 | 61.2% |
| SPA | 1957152 | 11.42% |
| POR | 462901 | 2.7% |
| FRE | 461506 | 2.69% |
| DUT | 372058 | 2.17% |
| JPN | 351357 | 2.05% |
| RUS | 315826 | 1.84% |
| GER | 280301 | 1.63% |
| ITA | 271411 | 1.58% |
| CZE | 229347 | 1.34% |
| GRE | 207670 | 1.21% |
| POL | 188343 | 1.1% |
| SWE | 167721 | 0.98% |
| KOR | 156649 | 0.91% |
| EST | 147034 | 0.86% |
| FIN | 143474 | 0.84% |
| SCR | 128020 | 0.75% |
| LAV | 119390 | 0.7% |
| HUN | 118703 | 0.69% |
| LIT | 117985 | 0.69% |
| ISL | 117985 | 0.69% |
| ARA | 117985 | 0.69% |
| CHI | 91387 | 0.53% |
| NOR | 63797 | 0.37% |
| TUR | 49501 | 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 | 7306103 | 42.62% |
| 1 | 185852 | 1.08% |
| 2 | 22156 | 0.13% |
| 3 | 5990848 | 34.94% |
| 4 | 212271 | 1.24% |
| 9 | 3427126 | 19.99% |
| 0+4 | 7518374 | 43.85% |
Count of Atoms by Suppressibility:
| Suppressibility Status | Name Count | % of Metathesaurus |
|---|---|---|
| E | 9623 | 0.06% |
| O | 2060326 | 12.02% |
| N | 14726975 | 85.9% |
| Y | 347432 | 2.03% |
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% |
| * | 2 | 1.05% |
| EST | 2 | 1.05% |
| LAV | 2 | 1.05% |
| HUN | 2 | 1.05% |
| SCR | 2 | 1.05% |
| NOR | 2 | 1.05% |
| HEB | 1 | 0.53% |
| DAN | 1 | 0.53% |
| LIT | 1 | 0.53% |
| TUR | 1 | 0.53% |
| BAQ | 1 | 0.53% |
| ISL | 1 | 0.53% |
| ARA | 1 | 0.53% |
| CHI | 1 | 0.53% |
| UKR | 1 | 0.53% |
*Note: 2 sources contribute relationships which have no associated language values.
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Last Reviewed: May 5, 2025