(1) You can search the entire content of Dean’s by phrase or by individual words. Just type your keywords into the search box and then pull down the search icon on the right and choose the option you need: search by word or by phrase or reset the content.
(2) Double click on a word in the content of a definition, and if the word is listed as a keyword in Dean’s, it will look that word up.
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n. (Elec.) A piece of apparatus used for reversing the direction of an electrical current; an attachment to certain electrical machines, by means of which alternating currents are made to be continuous or to have the same direction.