cell theory
scientific theory that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells
en-GB/ˈsɛl θɪəɹiː/
en-US/ˈsɛl ˌθiəˌɹi/
scientific theory that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells