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...)
Grandmother. That is the proper term, as the others are abbreviations
COD = Call Of Duty, Cash On Delivery
Because, Ted or Teddy are abbreviations of Edward.
The People's Commissariat for Internal Affairs was the communist secret police in Russia. Abbreviations for the group are actually NKVD.
are teenagers who write the abbreviation MWc or SQd in their names on facebook, in a gang or group
What do you call a group of Dancers?
The abbreviations are PL.
what do u call a group of words
you call a group of cakes a batch
The state abbreviations of (ME) isMAINE
No, abbreviations are not allowed in Scrabble.
There are too many to list and the AAMT (whatever they call themselves now) keeps changing the list all the time. Usually your employer will furnish you a list of abbreviations approved by their clients. Stedmans also publishes a book of medical abbreviations. The abbreviation cc is now mL. Any abbreviation that is not clear what it is.