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.
Physical custody refers to where the children live on a regular basis. It can be shared by both parents or granted to just one. How custody is ordered at the time of your divorce can affect you later. For example, in some states, a parent with sole physical custody has a presumed right to move away with the kids. To prevent a move, the noncustodial parent must go to court and show that the move would. be harmful to the kids.