Comité International des Poids et Mesures (CIPM) /kômitā″aNternäsyōnäl″dāpô·ä″āmesYr″/ , a group of scientists who meet periodically to define the international (SI) units of physical quantities, such as the volume of a liter, the length of a meter, or the precise amount of time in a minute. See also SI units.
