=Im-mu´ni-ty.= The condition of being immune or exempt from disease, especially the condition arising from inoculation, or from a peculiar resistance of the organism. =Im´preg-na´´tion.= 1. The act of fecundation or of rendering pregnant. 2. The process or act of saturation, a saturated condition. =In´farct.= A mass of substance extravasated either into the substance of an organ or into a vessel due to the obstruction to the circulation. =In´´fan-tile´ pel´vis.= A pelvis which has not responded to the developmental stimulation of the sexual glands at puberty, and therefore remains in its infantile shape. A masculine pelvis. =In´´fan-tile´ u´ter-us.= An undeveloped uterus. =In-fec´tion.= The communication of disease from one person to another, whether by effluvia or by contact, mediate or immediate; also the implantation of disease from without. =In´fil-tra´´tion.= To cause a liquid or gas to penetrate or enter by pores or interstices. =In´flam-ma´´tion.= A morbid condition characterized by pain, heat, redness and swelling. =In-nom´in-ate.= Not having a name, as the innominate bone. =In-som´ni-a.= Inability to sleep; abnormal wakefulness. =In´ter-sti´tial.= Pertaining to, or situated in, the interstices or interspaces of a tissue. =In´ter-tri´´go.= A chafe, or chafed patch of the skin; also the erythema or eczema that may result from a chafe of the skin. =In-tro´i-tus.= The entrance to any cavity or space. =In-ver´sion.= A turning inward, inside out, upside down, or other reversal of the normal relation of a part. =In´vo-lu´´tion.= 1. A rolling or turning inward. 2. The return of the uterus to its normal size after parturition. 3. A retrograde change, the reverse of evolution. =Is-chu´ri-a par-a-dox´a.= A condition in which the bladder is over-distended with urine, although the patient continues to urinate, generally in dribbles. =Jaun´dice.= Yellowness of the skin, eyes, and secretions, due to the presence of bile pigments in the blood. =La´bi-a.= Lip-shaped organs. The external folds of the vulva, labia majora, and the internal folds of the vulva, labia minora. =Lac´e-ra´´tion.= 1. The act of tearing. 2. A wound made by tearing. =Lac-ta´tion.= 1. The secretion of milk. 2. The period of the secretion of milk. 3. Suckling. =Lan-u´go.= The fine hair on the body of the fetus. =Lav-age´.= The irrigation or washing out of an organ, such as the stomach or bowel. =Le´sion.= Any hurt, wound or local degeneration. =Leu´cor-rhœ´´a.= A whitish, viscid discharge from the vagina and uterine cavity. =Light´en-ing.= The sense of lightness and easier breathing that follows the descent of the head into the pelvis during the last three weeks of pregnancy. It is most likely to occur in primiparas.