750 ILCS 50/18.06
When used in Sections 18.05 through Section 18.6, for the purposes of the Registry:
"Adopted person" means a person who was adopted pursuant to the laws in effect at the time of the adoption.
"Adoptive parent" means a person who has become a parent through the legal process of adoption.
"Adult child" means the biological child 21 years of age or over of a deceased adopted or surrendered person.
"Adult grandchild" means the biological grandchild 21 years of age or over of a deceased adopted or surrendered person.
"Adult adopted or surrendered person" means an adopted or surrendered person 21 years of age or over.
"Agency" means a public child welfare agency or a licensed child welfare agency.
"Birth aunt" means the adult full or half sister of a deceased birth parent.
"Birth father" means the biological father of an adopted or surrendered person who is named on the original certificate of live birth or on a consent or surrender document, or a biological father whose paternity has been established by a judgment or order of the court, pursuant to the Illinois Parentage Act of 1984 or the Illinois Parentage Act of 2015.
"Birth grandparent" means the biological parent of: (i) a non-surrendered person who is a deceased birth mother; or (ii) a non-surrendered person who is a deceased birth father.
"Birth mother" means the biological mother of an adopted or surrendered person.
"Birth parent" means a birth mother or birth father of an adopted or surrendered person.
"Birth Parent Preference Form" means the form prepared by the Department of Public Health pursuant to Section 18.2 completed by a birth parent registrant and filed with the Registry that indicates the birth parent's preferences regarding contact and, if applicable, the release of his or her identifying information on the non-certified copy of the original birth certificate released to an adult adopted or surrendered person or to the surviving adult child or surviving spouse of a deceased adopted or surrendered person who has filed a Request for a Non-Certified Copy of an Original Birth Certificate.
"Birth relative" means a birth mother, birth father, birth grandparent, birth sibling, birth aunt, or birth uncle.
"Birth sibling" means the adult full or half sibling of an adopted or surrendered person.
"Birth uncle" means the adult full or half brother of a deceased birth parent.
"Confidential intermediary" means an individual certified by the Department of Children and Family Services pursuant to Section 18.3a(e).
"Denial of Information Exchange" means an affidavit completed by a registrant with the Illinois Adoption Registry and Medical Information Exchange denying the release of identifying information which has been filed with the Registry.
"Information Exchange Authorization" means an affidavit completed by a registrant with the Illinois Adoption Registry and Medical Information Exchange authorizing the release of identifying information which has been filed with the Registry.
"Medical Information Exchange Questionnaire" means the medical history questionnaire completed by a registrant of the Illinois Adoption Registry and Medical Information Exchange.
"Non-certified Copy of the Original Birth Certificate" means a non-certified copy of the original certificate of live birth of an adult adopted or surrendered person who was born in Illinois.
"Proof of death" means a death certificate.
"Registrant" or "Registered Party" means a birth parent, birth grandparent, birth sibling, birth aunt, birth uncle, adopted or surrendered person 21 years of age or over, adoptive parent or legal guardian of an adopted or surrendered person under the age of 21, or adoptive parent, surviving spouse, or adult child of a deceased adopted or surrendered person who has filed an Illinois Adoption Registry Application or Registration Identification Form with the Registry.
"Registry" means the Illinois Adoption Registry and Medical Information Exchange.
"Request for a Non-Certified Copy of an Original Birth Certificate" means an affidavit completed by an adult adopted or surrendered person or by the surviving adult child or surviving spouse of a deceased adopted or surrendered person and filed with the Registry requesting a non-certified copy of an adult adopted or surrendered person's original certificate of live birth in Illinois.
"Surrendered person" means a person whose parents' rights have been surrendered or terminated but who has not been adopted.
"Surviving spouse" means the wife or husband, 21 years of age or older, of a deceased adopted or surrendered person who would be 21 years of age or older if still alive and who has one or more surviving biological children who are under the age of 21.
"18.3 statement" means a statement regarding the disclosure of identifying information signed by a birth parent under Section 18.3 of this Act as it existed immediately prior to May 21, 2010 (the effective date of Public Act 96-895) .
750 ILCS 50/18.06