What is the name for a group of adjoining graves owned by the same lot holder?

The term used for a group of adjoining graves that are owned by the same lot holder is "Plot." In the context of cemeteries, a plot refers to a designated area of land where multiple graves can be located, allowing for families to be interred together. This is significant for burials, as many families choose to purchase plots to ensure that their loved ones are laid to rest in proximity to one another.

The other terms have different meanings: a crypt typically refers to a burial chamber, usually within a mausoleum, rather than outdoor graves. A lot can refer to a larger area that may include multiple plots, while a plat is a detailed map or plan showing the arrangement of graves and plots within a cemetery. Thus, "Plot" specifically refers to the individual or grouped grave spaces within a cemetery context.