Definition of law. 1  1a (1) : a binding custom or practice of a community : a rule of conduct or action prescribed (see prescribe 1a) or formally recognized as binding or enforced by a controlling authority (2) : the whole body of such customs, practices, or rules The courts exist to uphold, interpret, and apply the law.
cation-anion balance. the balance in serum or plasma between the anions and cations must equilibrate near to the level of 155 mEq/l. Estimation of any imbalance, usually by chloride and bicarbonate measurement, is basic to any determination of acid-base abnormality. cation channels.
A cation is a positively charged ion. Thus it has fewer electrons than protons. It is also attracted to the cathode in the process of electrolysis.A negatively charged ion, which has more electrons than protons, is called an anion..An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.t is also attracted to the cathode in the process of electrolysis. A negatively charged ion, which has more electrons than protons, is called an anion.. An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.