Economics and business dictionary from The Guardian, with bias towards business and finance but covering main economics concepts (e.g. Deflation, Keynesian economics, Retail price index) and institutional terms (e.g. Agenda 21, Federal Reserve Board, Nikkei 225). Basic, single-paragraph definitions.
Glossaries of Economic Terms in Principles of Macroeconomics
Nearly two hundred terms are given short, one-line definitions, with links to graphs or articles for further explanation.
Glossary from the free online book The Economy, with more than 500 short definitions of terms from micro, macro, statistics, and policy.