valley. (building construction). An inside angle formed where two sloping sides intersect. (geography). A generally broad area of flat, low-lying land bordered by higher ground.
In ordinary usage, price is the quantity of payment or compensation given by one party to another in return for goods or services.
Definition of economic for Students. 1  1 : of or relating to the study of economics economic theories. 2  2 : relating to or based on the making, selling, and using of goods and services The program promoted economic growth.