Bear in mind that context is important for interpretation of abbreviations, since the same letters can stand for several things (for example, SF often means San Francisco, but also often means Science Fiction, or speculative fiction). That said, I interpret CIC to mean Commander In Chief.
The acronym CIC can stand for many things but in medical terms it most probably stands for Clinical Information Consultancy as used by the NHS. Otherwise the term could stand for Certified Infection Control possibly when used in nursing.
CIC can stand for various things depending on the context. Some common meanings are "Canadian Institute of Chartered Accountants," "Customer Identification Code," and "Closed Industrial Compound."
There are many different possible organizations and businesses that the acronym ICAN could stand for. This acronym could stand for the International Cesarean Awareness Network. This acronym could also stand for the Independent Community Arts Network.
Letters that stand for parts of a name are called initials.
There is no acronym with the letters CORNER. It does not stand for anything because it does not exist. No concept or organization uses the acronym CORNER.
The acronym AD stands for Anno Domini.
The acronym AC stands for Before Meals.
The acronym LR stands for Long Range.
The acronym AP stands for Apical Pulse.
The acronym AAW stands for Antiair Warfare.
The acronym AAF stands for Army Airfield.
The acronym AB stands for Architect Building.