1.nounA comparatively human-friendly abbreviation of complex input to a computer program.
"The preprocessor expands any embedded macros into source code before it is compiled."
2.nounMacro lens
3.nounThe study of the entire economy in terms of the total amount of goods and services produced, total income earned, the level of employment of productive resources, and the general behavior of prices.
4.nounAny of the elements required in large amounts by all living things.