cast

I. An object formed by the solidification of a liquid poured into a mould. 2 A mould of a tubular structure, such as a bronchial tube or a renal tubule, formed by a plastic exudate, blood c, a renal c. formed chiefly of a blood-clot, coma c, Kulz's cylinder, a renal cast of strongly refracting granules said to be indicative of imminent coma in diabetes, decid'ual c, a mould of the interior of the uterus formed of the exfoliated mucous membrane in cases of extrauterine gestation, epithe'lial c, a renal c. consisting largely of cylindrical epithelium, false c, cylindroid, mucous cast, fatt'y t., a renal cast consisting largely of fat globules, gran'ular c, a renal c. of granular texture, usually an altered albuminoid material, mu'cous c, false or spur i-