More from this author. 1  Largest World Cities: 2014. 2  World Urban Areas Population and Density: A 2012 Update. 3  Largest Cities in the World: 2016. 4  Largest 1,000 Cities on Earth: World Urban Areas: 2015 Edition. 5  The Costs of Smart Growth Revisited: A 40 Year Perspective.
Definition of fossil. 1  1 : a remnant, impression, or trace of an organism of past geologic ages that has been preserved in the earth's crust â compare living fossil. 2  2a : a person whose views are outmoded : fogyb : something (such as a theory) that has become rigidly fixed.
Fossil. Definition. noun, plural: fossils. (1) Any preserved evidence of life from a past geological age, such as the impressions and remains of organisms embedded in stratified rocks. (2) The mineralized remains of an animal or plant.adjective. Having the characteristic, or pertaining to the nature, of a fossil.1) Any preserved evidence of life from a past geological age, such as the impressions and remains of organisms embedded in stratified rocks. (2) The mineralized remains of an animal or plant. adjective. Having the characteristic, or pertaining to the nature, of a fossil.