Constituting or amounting to a whole; total: aggregate sales in that market. Botany Crowded or massed into a dense cluster. Composed of a mixture of minerals separable by mechanical means. A total considered with reference to its constituent parts; a gross amount: "An empire is the aggregate of many states under one common head\u201d ( Edmund Burke). The mineral materials, such as sand or stone, used in making concrete. To gather into a mass, sum, or whole. To amount to; total. To come together or collect in a mass or whole: "Some [bacteria]aggregate so closely as to mimic a multicellular organism\u201d ( Gina Kolata). in the aggregate Taken into account as a whole: Unit sales for December amounted in the aggregate to 100,000.