All fully specified names (FSN) should be represented in US English. When there is a difference between the US and GB spelling, there should be US and General British (GB) preferred terms (PT) and/or synonyms (SYN).
Where an FSN represents the name of an organization or trademarked name, a synonym with variant GB or US spelling is not required.
|References for Spelling|
Wikipedia, the free encyclopedia*
*Note: Wikipedia may be used as a starting point, or source, for authoritative references, but not as an actual reference
|US Medical English|
Stedman's Medical Dictionary
Merriam-Webster Online Dictionary
American Medical Association (AMA) Manual of Style
Dorland's Medical Dictionary - medical terminology
Chambers 21st Century Dictionary - general
Oxford English Dictionary
Oxford English Dictionary spelling is different from British English. A summary of the points of difference can be found at http://en.wikipedia.org/wiki/Oxford_spelling_. In those cases where British English and Oxford English Dictionary differ, SNOMED CT follows the British English spelling.
The addition of an Oxford English Dictionary term is allowed but not required. When added it should be marked as acceptable in the British English dialect. In some cases it is also accepted or preferred in US English.