Seaman apprentice
Those are abbreviations for Colorado (CO), Kansas (KS), Oklahoma (OK) and Arkansas(AR).
Never Again Volunteer Yourself
In the United States Navy, the abbreviation LT before a sailor's name indicates that the sailor has the rank of Lieutenant (also abbreviated LT, Lieut, and LEUT).
Abbreviations
distal
ATS
what does DOM mean
ar = on
ar
most home plans using abbreviations (to keep the plan from being cluttered) will have a table that explains the abbreviations
It depends on what you mean by a "group of abbreviations". If you mean several abbreviations chained together to form something that looks like a word (like SCUBA and RADAR), it's an Acronym. If you mean something like an alphabetical listing of abbreviations, that's usually called a glossary (although that particular term covers a lot of ground...)