Descriptions
A concept has multiple associated descriptions.
Each description has a description type and a unique numeric description identifier.
Fully specified name (FSN) and synonym (SYN) are description types in SNOMED CT.
A preferred term (PT) is a synonym that has been marked as preferred in a particular dialect.
Every concept may have only one preferred term in a specific dialect. Two preferred terms for the same language may coexist if they belong to two distinct dialects (e.g. variant US and GB of English language).
For example,
| Description type | Description |
| FSN | Bleeding of mouth (disorder) |
| PT | Bleeding of mouth |
| SYN | Bleeding in mouth |
| SYN - US English | Oral hemorrhage |
| SYN - GB English | Oral haemorrhage |
| SYN | Stomatorrhagia |
| Description type | Description |
| FSN | Computed tomography of upper limb (procedure) |
| PT | CT of upper limb |
| SYN | Computed tomography of upper limb |
| Description type | Description |
| FSN | Esophageal structure (body structure) |
| PT - US English | Esophageal structure |
| PT - GB English | Oesophageal structure |
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