A cation is an ion with a positive charge. The term ion refers to a chemical that has either a positive or negative charge.
An ion with a positive electric charge; opposite of anion. It is attracted by the cathode (negative pole).
A positively charged ion that migrates towards the cathode within an electric solution (cell) and relinquishes its positive charge.
An ion that carries a positive charge as a result of electron loss is known as a cation. Within the body, cations include sodium, potassium, magnesium, and calcium ions.
A cation refers to an ion that carries a positive charge. One example of a cation is the sodium ion found in a saline solution.