In general, the anode is the electrode that positive current flows INTO from the outside, and the cathode is the electrode that it flows FROM (to the outside). Electrons, of course, flow the opposite way. In electrochemistry, the anode is where oxidation occurs and cathode is where reduction occurs ("an ox red cat").
Also, what is the charge of the anode?
In electronic vacuum devices such as a cathode ray tube, the anode is the positively charged electron collector. In a tube, the anode is a charged positive plate that collects the electrons emitted by the cathode through electric attraction. It also accelerates the flow of these electrons.
Why is an anion negative but an anode is positive?
Faraday also introduced the words anion for a negatively charged ion, and cation for a positively charged one. In Faraday's nomenclature, cations were named because they were attracted to the cathode in a galvanic device and anions were named due to their attraction to the anode.