Georg Meissner was a prominent German physiologist known for his contributions to the knowledge of the digestive and nervous systems. There are a few synonyms that can be used to describe Meissner and his work. For example, he could be called a neuroscientist, as he was highly interested in the physiology of the nervous system. He could also be referred to as a gastroenterologist, given his expertise in the digestive system. Additionally, he is known as a pioneer of histology, the study of tissues and cells in biological organisms. Overall, Georg Meissner's legacy continues to impact the fields of physiology, neuroscience, gastroenterology, and histology.