Category: M

  • Mercaptan

    Any organic chemical that contains the — SH radical. It is formed when the oxygen of an alcohol is replaced by sulfur.  

  • Menton

    A craniometric landmark, being the lowest point of the mandibular symphysis seen in a lateral radiograph. It is similar to, but not necessarily the same as, gnathion, which is the lowest point of the mandible in the midline as palpated in the living.  

  • Mental measurements yearbook

    A widely used index of commercially published, standardized tests.  

  • Menstrual suppression

    The use of reproductive hormones to lengthen the time between menstrual cycles. This application can lessen the frequency of diseases or conditions that occur perimenstrually.  

  • Menstrual epilepsy

    Seizures that occur preferentially during particular portions of the menstrual cycle, e.g., during ovulation or menses.  

  • Mens rea

    Criminal intent. In legal matters an unlawful act is considered to be a criminal act only when the person who commits it acts with criminal intent. From a psychological perspective, this means that minors, the mentally ill, and those affected by organic brain disease may commit unlawful acts but not be culpable of them in…

  • Menotropins

    A combination of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) used to treat infertility by promoting growth and maturation of the follicle of the ovary. Menotropins is obtained from the urine of postmenopausal women. A standard extract is used with human chorionic gonadotropin to induce ovulation.  

  • Menorrhalgia

    Painful menstruation or pelvic pain accompanying menstruation, sometimes a symptom of endometriosis.  

  • Menometrorrhagia

    Excessive bleeding during and between menstrual periods.  

  • Meniscocyte

    A crescent-shaped red blood cell.