What is defined as a service without the body present, often held days or weeks after the disposition?

The concept being described is commonly known as a memorial service. This type of service is characterized by the absence of the deceased's body and usually takes place some time after the actual death, allowing family and friends to gather, remember, and celebrate the life of the individual who has passed away. Memorial services often emphasize personal remembrance and may include sharing memories, readings, and music, creating a space for reflection and healing.

In contrast, a traditional service typically involves the presence of the body, such as in a funeral, where there may be specific religious rites or customs observed. A humanistic service focuses on secular ideals and may not include any religious elements but still usually involves the body being present. Non-traditional services can vary widely in format and meaning, but they often include elements that are unconventional, which could include the absence of the body, yet that is not the defining characteristic.

Thus, the defining features of a memorial service distinctly align with the description provided, making it the correct choice for this question.