CCU definition: 1. abbreviation for coronary care unit: part of a hospital that provides treatment for people with…. Learn more. What is a CCU? A CCU, or critical care unit , is a special type of hospital unit that specializes in providing intensive care to patients who are critically ill. Patients who are in a CCU typically require around-the-clock care, and may be kept on a ventilator or other life-support equipment. ICU And CCU Full Form - The Full form of ICU And CCU is intensive care unit and critical care unit. Learn more about ICU And CCU roles, eligibility, salary, functions, etc from Careers360.com. CCU stands for Critical Care Unit, a hospital unit that takes care of seriously ill patients who need special treatment and monitoring. Learn about the benefits, equipment, treatment, staff and challenges of CCU , and the difference between CCU and ICU.