A more thorough explanation:

Definition: Interesse termini (in-tər-ES-ee TUR-mə-nee) is a legal term that refers to a lessee's right of entry onto the leased property, especially a lessee's interest in real property before taking possession.

It is not an estate, but an interest for the term. It gives the lessee a claim against any person who prevents the lessee from entering or accepting delivery of the property. It is a right or interest only, and not an estate, and it has the properties of a right. It may be extinguished by a release to the lessor, and it may be assigned or granted away, but it cannot be surrendered technically considered, for there is no reversion before entry, in which the interest may drown.

For example, if a person leases a house for a year, they have an interesse termini in the property. They have the right to enter the property and take possession of it for the term of the lease. If someone else tries to prevent them from doing so, the lessee can take legal action to protect their interesse termini.

Another example is if a person leases a piece of land for farming for a specific period. They have an interesse termini in the land, which gives them the right to enter the land and use it for farming during the lease term.

It is important to note that the Law of Property Act, 1925, has swept away the requirement of entry to perfect a lease. All terms of years absolute, whether created before or after the commencement of the Act, can take effect from the date fixed for the commencement of the term without actual entry.