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.
Ionic compounds are basically defined in such a way that compounds containing two or more ions are considered alongside electrical attraction. One of the positively charged ions (called cations) and the second is a negative charge (anion).Cations are usually the metal atoms and anions are polyatomic ions or metals (ions with more than one atom).ne of the positively charged ions (called cations) and the second is a negative charge (anion). Cations are usually the metal atoms and anions are polyatomic ions or metals (ions with more than one atom).