In severe cases, the viral infection causes a high fever, bleeding into the skin, and necrosis (death) of cells in the kidney and liver. The damage done to the liver from the virus results in severe jaundice which yellows the skin. Hence, the yellow in yellow fever..
filter definition: The definition of a filter is something that separates solids from liquids, or eliminates impurities, or allows only certain things to pass through. (noun) A Brita that you attach to your water faucet to remove impurities from you...
Filtering data in a spreadsheet means to set conditions so that only certain data is displayed. It is done to make it easier to focus on specific information in a large database or table of data. Filters works with records or rows of data in the database. The conditions that are set are compared with one or more fields in the record. If the conditions are met, the record is displayed. If the conditions are not met, the record is filtered out so that it isn't displayed with the rest of the data records.