infiltration (in-fil-tra's hun). 1

A proce or condition by virtue of which fluid or solid foreign substances are deposited in and diffused through a ti ue, organ, or cell, as the i. of a ti ue or organ with red or white blood corpuscles or of a cell by fatty particles. Strictly speaking, i. should be clearly separated from degeneration, as in the latter condition the foreign substances are from changes within the cell, but practical usage often makes the terms synonymous. 2. See infiltrate, albuminous i. See albuminous degeneration, amyloid i. An i. of the ti ues or viscera, with a glycoprotein containing chondroitin-sulphuric acid. black i. of the lungs. See anthracosis. calcareous i. See calcareous degeneration, under degeneration, cellular i. The effusion of white blood cells into the parenchyma of a ti ue about to inflame. cholesterin i. See cholesterin degeneration, under degeneration, chondroid i. See amyloid i. colloid i. See colloid degeneration, under degeneration, dropsical i. See edema. edematous i. See edema. fatty i. The i. of ti ue cells with fatty matter brought to them in the blood, fatty i. of the heart. Exce ive development of the sub pericardial fat with which may be a ociated fatty degeneration of the heart, fibrinous i. The effusion of the fibrinous elements of the blood into the parenchyma of an inflaming ti ue, fibroid i. I. of an infarct with fibroid ti ue, glycogen ous i. I. of the ti ues or viscera with glycogen, hemorrhagic i. I. with blood. inflammatory i. The i. of a part with inflammatory products, mucous i. Mucoid softening, myeloid i. The i. of bone by the peculiar nucleated cells which go to make up' medullary tumors. It is generally but not always benign, pigmentary i. See pigmentary degeneration^ under degeneration, purulent i. I. with pus; diffuse suppuration, saline i. See calcareous degeneration, under degeneration, sanguineous i. I. with blood, serous i. See edema, tuberculous i. I. with tubercle, uratic i. See iiratic degeneration, under degeneration, urinary i. I. with extravasated urine, waxy i. See amyloid degeneration, under degeneration. [Lat., i nHl train fin it ovist (in-fin-it'ov-ist). The follower of a doctrine according to which generation is caused by the evolution of germs contained infinitely one within another.