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n. Abbr. ka
1. A negatively charged electrode, as of an electrolytic cell, storage battery, diode, or electron tube.
2. The positively charged terminal of a primary cell or a storage battery that is supplying current.

[Greek kathodos, descent : kat-, kata-, cata- + hodos, way, path.]

ca·thod′ic (kă-thŏd′ĭk) adj.
ca·thod′i·cal·ly adv.


(kæˈθɒdɪkəlɪ) or


(Chemistry) in a cathodic manner, by using a cathode
References in periodicals archive ?
At each location replicate pipe samples were cathodically polarized to various pipe-to-soil potentials for five years.
In addition, the electro-deposited aluminum coating cathodically protects the substrate when the coating is damaged.
The remaining metallic services (11%) are cathodically protected in some way.
must be constructed of fiberglass-reinforced plastic; steel that has been cathodically protected; or in the case of tanks only, a steel-fiberglass reinforced plastic composite).
11,12) The test consists of three steps: (1) an EIS curve is run to establish the initial condition of the coating; (2) the sample is cathodically polarized to generate an alkaline environment and stimulate delamination; and (3) an EIS curve is run to assess the condition of the coating after delamination.
3+] saturation, there is no transferrin isoform cathodically next to asialotransferrin.
Although the tanks are double-walled, have a working automatic tank monitoring system, and are cathodically protected, the tanks are still not impervious to leaks.
This failure, however, did not result in rusting or undercutting because the inorganic zinc primer protected the panel's scribed area cathodically.
While cathodically protected rubber to metal bonded components present a very unusual and difficult environment for adhesives to resist, the data clearly shows that the proper selection of adhesive will provide a durable, environmentally sound bond.
Chalcopyrite was protected cathodically, facilitating selective leaching of nickel in the order followed by copper.
Given that bicarbonate and hydroxyl ions react very rapidly and quantitatively to produce carbonate ion, any bicarbonate very near a cathode will be rapidly converted to carbonate ion and cathodically localized carbonate concentration will rise and approach 10,000 ppm or more.
In the presence of moisture and an electric field, electrolytic metal migration occurs when metal ions migrate to a cathodically (negatively) charged surface and form dendrites.