(astronomy) A phenomenon occurring when the Earth casts a shadow over the Moon.

(astronomy) A phenomenon occurring when the Moon passes between the Earth and the sun.

plural of echo chamber

A room or other enclosed space that is highly conducive to the production of echoes, particularly one that has been designed and built for this purpose.

(economics) economic thought in which one applies moral beliefs, or judgment, claiming that an outcome is "good" or "bad". For example: "this tax on cigarettes will be good because it will reduce smoking."

(derogatory, slang) Supply-side economics, particularly in reference to policies based on the Laffer curve.

The study of homemaking, including cookery, needlework, cleaning, etc.

(psychology, psychiatry) A system of behavior modification based on the principles of operant conditioning; patients are rewarded with tokens (reinforcers) for engaging in desirable activities.

An economy in which goods and services are exchanged in a market, as opposed to a state-controlled economy.

The Reichian theory, progressing from Freudian psychoanalysis, of the energy household of the human organism.