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
inducer. in biosynthesis, a compound that induces synthesis of a specific enzyme or sequence of enzymes, by antagonizing the corresponding repressor, or by some other mechanism.nÂ·ducÂ·er. n. 1. One that induces, especially a molecule that is usually a substrate of a specific enzyme pathway, combining with an active repressor produced by a regulator gene to deactivate the repressor. 2.