The term combination hamburger refers to a sandwich that features a combination of different ingredients. Synonyms for this phrase might include mixed burger, medley burger, or fusion burger, as each of these terms suggests a blend of flavors and textures. Other possible synonyms might include layered burger, composite burger, blend burger, or hybrid burger. In each case, the word hints at the fact that the sandwich is made up of various components that are combined in a unique and interesting way. Whether you prefer the term combination hamburger or one of its many synonyms, there's no denying that these sandwiches are a delicious and satisfying way to enjoy a meal.