A more thorough explanation:

Modus tenendi (pronounced moh-dus tuh-nen-die) is a Latin term used in history to describe the way in which estates were held. It refers to the different types of tenures that were used to hold land.

For example, in medieval England, there were several types of modus tenendi that were used to hold land. These included:

• Fee simple: This was the most common type of tenure, where the land was held outright by the owner.
• Fee tail: This was a type of tenure where the land was passed down through the family line, usually to the eldest son.
• Life estate: This was a type of tenure where the land was held for the lifetime of the owner or another person.

These examples illustrate the definition of modus tenendi because they show the different ways in which land was held in medieval England. Each type of tenure had its own rules and regulations, and it was important for landowners to understand the modus tenendi of their land in order to know their rights and responsibilities.