former measure of the United States economy; the total market value of goods and services produced by all citizens and capital during a given period (usually 1 yr) | the quality (positive or negative) that renders something desirable or valuable |
| relative darkness or lightness of a color |
| a numerical quantity measured or assigned or computed |
| an ideal accepted by some individual or group |
| the amount (of money or goods or services) that is considered to be a fair equivalent for something else |
| (music) the relative duration of a musical note |