Catabiosis is the process of growing older, aging and physical degradation. The word comes from Greek "kata"—down, against, reverse and "biosis"—way of life and is generally used to describe senescence and degeneration in living organisms and biophysics of aging in general. Catabiotic force on the contrary is the influence exerted by living structures on adjoining cells, by which the latter are developed in harmony with the primary structures.