Category: I

  • Industrial hygienist

    A scientist or engineer engaged in the study, control, and prevention of health risks in the workplace.  

  • Intermittent hydrosalpinx

    Edema of the fallopian tube in which the distention is so great that the tube is forced by the pressure to empty itself via the uterus.  

  • Irreversible hydrocolloid

    A hydrosol of alginic acid whose physical state is changed by an irreversible chemical reaction, forming insoluble calcium alginate. This substance is called alginate or dental alginate. Alginate is used in dentistry as a primary impression material.  

  • Internal hydrocephalus

    An accumulation of fluid within ventricles of the brain.  

  • Infantile hydrocele

    Peritoneal fluid in the tunica vaginalis and vaginal process with the latter closed at the abdominal ring.  

  • Intermittent hydrarthrosis

    Recurring attacks of swelling of the large joints, lasting 2 to 5 days and then remitting spontaneously. The condition affects men and women equally. The period between attacks is commonly 2 to 4 weeks, during which time the joint is normal. The knee is usually involved, but the elbow, hip, and ankle also may be…

  • Intestinal hormone

    Any of several hormones produced by the mucosa of the intestine. These include cholecystokinin, motilin, secretin, and vasoactive inhibitory peptide.  

  • Inhibitory hormone

    Any of a group of substances limiting the release of hormones from the pituitary. Somatostatin, which inhibits the release of growth hormone, is included in this group.  

  • Immunoregulatory hormone

    A hormone that influences components of the immune system, including the number and activity of the white blood cells. Such hormones are secreted by almost all of the glands in the body, particularly the hypothalamus and adrenal glands.  

  • Impaired home maintenance

    Inability to independently maintain a safe, growth-promoting immediate environment.