The term you might be looking for is "tenth-day ceremony" or "tenth-day memorial." In some cultures and traditions, there is a practice of observing a ceremony or memorial service on the tenth day after a person's death. This practice is common in various cultures and religions, including Hinduism, Buddhism, and some parts of Islam.
The specific rituals and customs associated with the tenth-day ceremony can vary depending on the cultural and religious context. In some cases, it may involve prayers, offerings, recitations of religious texts, and other symbolic acts to honor the deceased and pray for their journey in the afterlife or to wish for their peaceful rest.
It's important to note that customs and practices surrounding death and mourning can differ widely across different cultures and belief systems, so the specific details of the tenth-day ceremony can vary significantly depending on the region and religious affiliation.