Cisco Certified Network Associate (CCNA) The Cisco Certified Network Associate (CCNA) certification is the second level of Cisco's five-level career certification process. A CCNA certification certifies a technician's ability to install, set up, configure, troubleshoot and operate a medium-sized routed and switched computer network.
Freebase(0.00 / 0 votes)Rate this definition: Retraining. Vocational rehabilitation or retraining is the process of learning a new skill or trade, often in response to a change in the economic environment. Generally it reflects changes in profession rather than an upward movement in the same field.
Entrainment (engineering), the entrapment of one substance by another substance; Entrainment (hydrodynamics), the movement of one fluid by another; Entrainment (meteorology), a phenomenon of the atmosphere; Entrainment (physical geography), the process by which surface sediment is incorporated into a fluid flow