- The definition of CIE stands for Córas Iompair Éireann, the public transportation run by the Irish government.
An example of CIÉ is the company that runs the primary bus system in Dublin.
Cie definition by Webster's New World
Origin: French compagnieCompany
cie - Computer Definition
(Commission Internationale de l'Eclairage, International Commission on Illumination, Vienna, Austria, www.cie.co.at) An international organization that sets standards for all aspects of lighting and illumination, including colorimetry, photometry and the measurement of visible and invisible radiation. See CIE Lab.