Category: D

  • Double approach/avoidance conflict

    In psychology, conflict instigated by the necessity of making a choice between two objects neither of which is wholly desirable or undesirable.  

  • Dose-response curve

    A graph showing the relationship between the size of a drug dose and the size of the response, dose-response relationship. A graph charting the effect of a specific dose of drug, chemical, or ionizing radiation. In radiology, also called survival curve.  

  • Dose

    A quantity or amount of a drug taken at a particular time, dosage. A measured quantity of a drug or radiation which is to be given to someone at one time. A short period of experiencing a minor illness (informal). An infection with a sexually transmitted disease (informal). The amount of medication that is administered…

  • Dorsiventral symmetry

    Having distinct lower and upper surfaces.  

  • Dorsal kyphosis

    Round upper back, kyphosis.  

  • Dorsalis pedis artery

    The artery whose pulse is palpable on the dorsal surface of the foot. The supplies the medial foot and great toe.  

  • Dormancy

    In botany, a period of inactivity in bulbs, buds, seeds, and other plant organs. Temporary inactivity; e.g., a state of transiently reduced metabolic activity.  

  • Doping

    The use of ergogenic agents to artificially improve athletic performance. In sports, the illicit use of a drug or blood product by an athlete in an effort to improve performance.  

  • Do pass

    In politics, the affirmative recommendation made by a committee in sending a bill to the floor for additional action.  

  • Dopamine hypothesis of schizophrenia

    The theory that schizophrenia victims are oversensitive to the neurotransmitter dopamine and are therefore in a state of over arousal. Phenothiazines alleviate schizophrenia symptoms acting as a block to transmission.