A TD (plural TDanna in Irish; full Irish form Teachta Dála , plural Teachtaí Dála) is a member of Dáil Éireann, the lower house of the Oireachtas (the Irish Parliament). It is the equivalent of terms such as "Member of Parliament" (MP) or "Member of Congress" used in other states. The official translation of the term is "Deputy to the Dáil", though a more literal translation is "Assembly Delegate".