15 M.R.S. §2303: Definitions -- Article II

1. Mentally disordered offender. "Mentally disordered offender" means a person who has been determined, by adjudication or other method legally sufficient for the purpose in the party state where the determination is made, to be mentally ill and:

A. Is under sentence for the commission of crime; or

B. Who is confined or committed on account of the commission of an offense for which, in the absence of mental illness, said person would be subject to incarceration in a penal or correctional facility.

2. Patient. "Patient" means a mentally disordered offender who is cared for, treated or transferred pursuant to this compact.

3. Sending state. "Sending state" means a state party to this compact in which the mentally disordered offender was convicted; the state in which the mentally disordered offender would be subject to trial on or conviction of an offense, except for the mentally disordered offender's mental condition; or, within the meaning of Article V of this compact, the state whose authorities have filed a petition in connection with an untried indictment, information or complaint.

4. Receiving state. "Receiving state" means a state party to this compact to which a mentally disordered offender is sent for care, aftercare, treatment or rehabilitation, or, within the meaning of Article V of this compact, the state in which a petition in connection with an untried indictment, information or complaint has been filed.