Abbreviations are shortened forms of words or phrases. Because they may not be understood by all users, they allow for misinterpretation. Consequently they are not permitted in fully specified names (FSN). They are not allowed in preferred terms (PT) or synonyms (SYN) unless they are accompanied by the fully expanded term.
Abbreviations are allowed in FSNs when they are:
Acronyms are a specific type of abbreviation. They are formed from the initial letters of words and may be pronounced as words.
Acronyms can be misinterpreted because they are not fully spelled out and have different meanings in different situations. Acronyms are not allowed in FSNs.
An acronym is allowed in an FSN when it has become a word in its own right, i.e. included in dictionaries; understood without expansion to its original full form (e.g. Laser device (physical object) ).
Preferred terms and synonyms
Acronyms are allowed in PTs or SYNs when accompanied by the fully expanded term.
The first word after the dash should be lower case as per usual capitalization rules.
Nontraumatic AKI (acute kidney injury) is a synonym for 140031000119103 |Acute nontraumatic kidney injury (disorder)|
Only the fully expanded term, not the acronym, should be in parentheses.