Using SNOMED CT with FHIR and the canonical SNOMED CT CodeSystem both refer to the "normalForm" and "normalFormTerse" properties. These aren't defined formally in SNOMED CT documentation and need to be agreed, defined and documented, then the relevant references can link to those definitions.
Specifically NormalForm will be the Long Necessary Normal Form. The terse form will be this without the Canonical (ie ordered attributes and groups) Long Normal Form without terms or whitespace. "Normal Form" is this with the terms populated.