keyword - 1.
A significant word or phrase in the title, subject headings (descriptors), contents note, abstract, or text of a record in an online catalog or bibliographic database which can be used as a search term in a free-text search to retrieve all the records containing it. See also: stop word.
Most online catalogs and bibliographic databases include an option that allows the user to type words that describe the research topic (in any order) and retrieve records containing the search terms in the data fields the system is designed to search whenever the keywords option is selected. One disadvantage is that a keywords search does not take into account the meaning of the terms used as input, so if a keyword has more than one meaning, irrelevant records (false drops) may be retrieved. Keywords are used as access points in KWAC, KWIC, and KWOC indexes. See also: Boolean and truncation.
2.A word in a programming language that has a strictly defined meaning, such as goto, if, then, else.These words must be used only in the specific sense defined in the language. ; дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://vax.wcsu.edu/library/odlis.html#keywords ;
http://www.computeruser.com/resources/dictionary/definition.html;
