These are the indirect costs that are related with manufacturing. Absorbed costs involve expenses like insurance, or property taxes for the building in which the production process takes place. When the total manufacturing costs are calculated, the implicit absorbed costs are not taken, but will be taken in a separate account.
On a company's income statement, the cost of goods sold entry does not reveal the absorbed costs and only the actual costs of the material is taken. Incurring insurance and property tax expenses is an essential part of the production process, but these absorbed costs are categorized as separate expenses.