Definition of knell. 1  transitive verb. : 2  to summon or announce by or as if by a knell. 3  intransitive verb. 4  1 : to ring especially for a death, funeral, or disaster : toll. 5  2 : to sound in an ominous manner or with an ominous effect.
For the journal, see Demography (journal) . Demography is the statistical study of populations, including of human beings. As a very general science, it can analyze any kind of dynamic living population, i.e., one that changes over time or space (see population dynamics).
What do you call the scientists that study fossils? Scientists who study fossils are known as paleontologists. Scientists who study fossils are known as paleontologists. A paleontologist who studies dinosaurs may be a vertebrat â¦ e paleontologist or a macro paleontologist.