Primary Process: In psychoanalytic theory, the generally unorganized mental activity characteristic of the unconscious. This activity is marked by the free discharge of energy and excitation without regard to the demands of environment, reality, or logic.

 

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Primary Process: In psychoanalytic theory, the generally unorganized mental activity characteristic of the unconscious. This activity is marked by the free discharge of energy and excitation without regard t . . . View Full Definition

Secondary Process: In psychoanalytic theory, mental activity and thinking characteristic of the ego and influenced by the demands of the environment. Characterized by organization, systematization, intellectua . . . View Full Definition

Primary Recovery: Any crude oil or natural gas that is recovered from a well as a result of the natural pressure within the reservoir.

Primary Radar: Primary radar systems receive reflections of their own transmitted signals as returned signals from the target.

Primary Production: The production of living matter by photosynthesizing organisms or by chemosynthesizing organisms. Usually expressed as grams of carbon per square meter per year

Primary Root: The first root formed by a plant.

Primary Seismic Waves: The fastest set of earthquake vibrations - also known as P-waves. They move through the Earth in compression and expansion motions (much like sound waves move through air). Called primary be . . . View Full Definition

Primary Structure: The sequence of amino acids in a protein.

Primary Teeth: The first set of teeth that humans get, lasting until the permanent teeth come in. Also referred to as deciduous teeth or baby teeth.

Primary Standard: A stable, high-purity material used in titrations and other chemical analyses to prepare solutions of precisely known concentration, or to determine the concentrations of substances which re . . . View Full Definition