Glossary D

Demarche refers to a course of action ; a maneuver. Demarche may also be defined as a diplomatic representation or protest; a statement or protest addressed by citizens to public authorities.
Dementia refers to a severe deterioration of cognitive abilities, such as memory, reasoning, judgement, and other higher mental processes.

dementia of the Alzheimer’s type refers to gradual onset of cognitive deficits caused by Alzheimer’s disease, principally identified by a person’s inability to recall newly or previously learned material. It is the most common form of Dementia.

dementia praecox refers to a Latin term which means "premature loss of mind" is an early label for what is now called Schizophrenia, emphasizing the disorder’s frequent appearance during adolescence.

- Democritus (ca. 460-370 B.C.) : Democritus the scientist who offered atoms as the physis and everything in nature, including humans, was explained in terms of atoms and their activities. His was the first completely materialistic view of the world and of humans.

Demographers is defined as people who study population/population trends

Demography refers to the study of the characteristics of population groups

Demonology is a term used in medieval Europe that refers to the study of demons and the treatment of persons said to be "possessed" by demons.