I'm not aware of a specific medical definition for "ceremonial behavior." However, in general, ceremonial behaviors are actions or rituals that are performed in a formal, ritualistic manner, often as part of a cultural, religious, or social tradition. These behaviors can serve various purposes, such as marking important life events, expressing shared values and beliefs, or reinforcing social bonds.

In some cases, ceremonial behaviors may have health implications. For example, participation in cultural or religious rituals can provide a sense of community and support, which can have positive effects on mental health. Additionally, certain ceremonial practices, such as meditation or prayer, may have direct physiological effects that contribute to stress reduction and relaxation.

However, it's important to note that the term "ceremonial behavior" is not a medical diagnosis or clinical concept, and its meaning can vary depending on the context in which it is used.

I am not a medical professional, but I can tell you that the term 'civilization' is more commonly used in social sciences and humanities rather than medicine. It refers to a complex human society, usually characterized by the development of agriculture, permanent settlements, and advanced institutions and technology. However, it is not a term that would typically be used in a medical definition. If you have any other questions, I'd be happy to try and help!