Medical Definition of Human immunodeficiency virus. Human immunodeficiency virus: HIV, the cause of AIDS. HIV has also previously been called the human lymphotropic virus type III, the lymphadenopathy-associated virus and the lymphadenopathy virus. No matter what name is applied, it is a retrovirus. (A retrovirus has an RNA genome and a reverse transcriptase enzyme.
Definition of custody for English Language Learners. 1  law : the legal right to take care of a child (such as a child whose parents are divorced) : 2  the state of being kept in a prison or jail. : 3  the act of protecting or taking care of something.
For example, you will often hear the words âcustodyâ and âvisitationâ being used in separation and divorce cases. âChild custodyâ refers to the rights and responsibilities between parents for taking care of their children. In your case, you will need to decide on custody.eep in mind that a child support order is separate from child custody and visitation, so you cannot refuse to let the other parent see the children just because he or she is not making the child support payments that the court ordered.