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).
|FSN||Bleeding of mouth (disorder)|
|PT||Bleeding of mouth|
|SYN||Bleeding in mouth|
|SYN - US English||Oral hemorrhage|
|SYN - GB English||Oral haemorrhage|
|FSN||Computed tomography of upper limb (procedure)|
|PT||CT of upper limb|
|SYN||Computed tomography of upper limb|
|FSN||Esophageal structure (body structure)|
|PT - US English||Esophageal structure|
|PT - GB English||Oesophageal structure|