active principle

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1. a chemical component.
2. a substance on which certain of the properties of a drug depend.
3. an accepted or professed rule of action or conduct; in a given philosophical system it is a fundamental or general law or truth from which others are derived. In bioethics some important principles are beneficence, justice, nonmaleficence, and respect for autonomy; these are derived in part from professional roles and traditions.
active principle any constituent of a drug that helps to confer upon it a medicinal property.
Bobath p's a type of neurophysiological rehabilitation; see bobath method.
Bohr's principle of complementarity reflexes do not independently account for the complex nature of infant behavior.
negentropic principle a principle of general systems theory stating that open systems have mechanisms that slow down or arrest the process of movement toward less efficiency and growth. Negentropy (negative entropy) is the tendency toward order and organization.
pleasure principle (pleasure-pain principle) in psychoanalytic theory, an inborn tendency to avoid pain and seek pleasure through the immediate reduction of tension by either direct or fantasied gratification.
reality principle in psychoanalytic theory, the ego functions that modify the demands of the pleasure principle to meet the demands and requirements of the external world.

ac·tive prin·ci·ple

a constituent of a drug, usually an alkaloid or glycoside, that is largely responsible for conferring its characteristic therapeutic properties.

ac·tive prin·ci·ple

(ak'tiv prin'si-pĕl)
A constituent of a drug, usually an alkaloid or glycoside, on which the characteristic therapeutic action of the substance largely depends.

ac·tive prin·ci·ple

(ak'tiv prin'si-pĕl)
Constituent of a drug, usually an alkaloid or glycoside; largely responsible for conferring its characteristic therapeutic properties.
References in periodicals archive ?
The question Dragona-Monachou does not explicitly address,(89) however, is whether for Posidonius God, fate, and nature are still aspects of one and the same reality or whether somehow they have become disentangled.(90) I conjecture that as structuring factors they all three still refer to the Stoic active principle, that they are aspects of it, but that they are not entirely coextensive anymore as they were for Posidonius' predecessors.
Problems involved in structure determination of active principles of plants used in traditional medicine.
The mechanism by which the plant or active principles exert analgesic activity still remains undetermined, but our results suggest that it does not involves the participation of the opioid system.
Trifloxystrobin (Table 1) is a mesostemic fungicide, which can be used as an active principle alone or in combination with other active principles.
They contain adjuvants, which are frequently maintained personal and are called inerts by the manufacturing companies, plus a proclaimed active principle, which is mostly checked alone.
Typically, each packet of oral contraceptives comes with 28 days' worth of color-coded pills, with the first 21 containing the active principle to inhibit ovulation, followed by 7 inert pills.
The proportion of pharmacological classes and most consumed active principles was calculated using the consumption of each class or active principle as the numerator and antidepressant consumption as the denominator
The thesis of this paper is that Thomas Aquinas offers an alternative model of abstraction (the Active Principle Model) that overcomes the standard objections to abstractionism and expands our view of what an abstractionist theory might look like.
The ability of a teacher to integrate internal and external sources of information and stimuli for a student - so that he or she can utilise learning as an active principle, rather than a passive attribute - is the only way to liberate him or her from the strait-jacket of classroom didacticism.
The company's latest product, white cement, includes photo-catalytic material, an active principle that reflects light and can destroy pollutants, and for which the Italcementi won the European patent.
Those receiving or with prescription of a one active principle medication was considered as monotherapy and those receiving or prescription of a more than one active principle medications were defined as a polytherapy.