cation (redirected from Cations)

cation /cat·ion/ (kat´i-on) a positively charged ion.cation´ic

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cat·i·on (ktn)

n.

An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.

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Cation

An ion carrying a positive charge due to a loss of electrons. Cations in the body include sodium, potassium, magnesium, and calcium ions.

Mentioned in: Electrolyte Supplements

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cation

[kat′ī·on]

Etymology: Gk, kata, down, ion, going

a positively charged ion. Compare anion.

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cation [kat´i-on]

an ion with a positive charge. adj., adj cation´ic.

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cation (katˑ·īˈ·n),

n a positively charged atomic or molecular species. See also ion.

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cation (kat´īon),

n a positive ion carrying a charge of positive electricity, therefore attracted to the negatively charged cathode.

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cation

a positively charged ion.

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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

channels through selectively permeable membranes via which only cations can migrate.

dietary cation-anion difference

prepartum has a major influence on the incidence of hypocalcemia (milk fever) in dairy cattle and, in the control of the disease, is manipulated so as to result in a metabolic acidosis which facilitates the mobilization of calcium. Defined as milliequivalents of (Na+K)-(Cl+S) per kg DM diet.

cation-exchange resin

ion-exchange resin.

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cation

A positively-charged ion–eg, Na+, K+, Ca2+, Mg2+