The first and last letters of the Greek alphabet stand together for beginning and end, the whole of something. Dream tradition reads them as a cycle you are seeing from start to finish.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.