Final answer:
A Life estate pur autre vie is a type of life estate created by the property owner but is based on the life of a person other than the grantee.
Step-by-step explanation:
The type of life estate that is created by someone other than the owner is known as a Life estate pur autre vie. This estate is established when the duration of the estate is based on the life of a person other than the grantee. It can occur when an owner conveys a property for the duration of someone else's life. Unlike the Conventional life estate, which is based on the grantee's life, and the Legal life estate, which is established by law rather than by the owner of the property, the Life estate pur autre vie is created voluntarily by an act of the owner but based on a third party's life. The Remainder life estate is another type of interest but is not a life estate in itself; instead, it refers to the interest that takes effect after the termination of the life estate.