The metre, kilogram, second and ampere are called fundamental units or base units. From these units we can derive some more units that are called derived units. These units are built up step by step from the base units and usually given a distinct name.
cadre [(kad-ree, kah-dray)] An elite or select group that forms the core of an organization and is capable of training new members. The New Dictionary of Cultural Literacy, Third Edition
Full Definition of CAD. 1. : an omnibus conductor. 2. : a man who acts with deliberate disregard for another's feelings or rights.See cad defined for English-language learners. See cad defined for kids.ADVERTISEMENT.. : an omnibus conductor. 2. : a man who acts with deliberate disregard for another's feelings or rights. See cad defined for English-language learners. See cad defined for kids.