To dream of an abbreviation represents a combination of meanings based on the symbolism of those letters. Refer to the themes section for the alphabet for a more in depth look at letter symbolism. Try to see how each letter may apply to your life individually and then combine them to form a more complex meaning.
Alternatively, an abbreviation could take on a more personal meaning based on the people or situations that you experience it occurring with. Ask yourself what feelings or beliefs stand out the most when you see the abbreviation.