Category: A

An experimental study of a phenomenon different from but related to the actual interests of the investigator.  

A chemical or drug applied topically to relieve pain, analgesic (internal). A drug taken by mouth in tablet or capsule form to relieve pain.  

Pleasurable sensations in the region of the anus. Sensations of pleasure experienced through defecation during a stage in the development of children.  

The terminal portion of the alimentary canal extending from the rectum to its distal opening, the anus. A passage leading form the rectum to the anus. The terminal portion of the large intestine, its external aperture being the anus. This includes the internal and external sphincter muscles of the anus. The canal remains closed except…

A type of respiration found only in bacteria in which the hydrogen released in glycolysis is combined with the bound oxygen of inorganic compounds.. The release of energy from the reduction of metals (e.g., iron, manganese, or sulfur) by cells or organisms that do not use oxygen as their primary energy source.  

A set of energy-producing reactions that can proceed in the absence of oxygen.  

A condition characterized by total deafness.  

In psychology, the choice of a love object similar in nature to those who have cared for him or her in earlier years; usually a mother object.  

In psychology, the profound sadness of an infant when separated from its mother for a prolonged period of time. Depression in infants suddenly separated from their mothers between the first months and 1 year of age. The loss of the love, affection, and nurturing usually present in the mother-child relationship may cause severe disturbances in…

In psychoanalysis, a condition characterized by dependence upon another person for care and support. In psychoanalysis, state of needing someone for support, as an infant’s dependence on the mother.