| spreader | 1. An instrument used to distribute a substance over a surface or area. 2. A device for spacing or parting structures. Gutta-percha spreader, an instrument used in dentistry for condensing gutta-percha laterally in a root canal. Rib spreader, an instrument for widening the space between ribs in intrathoracic operations. Root canal spreader, a tapered instrument utilised for condensing root filling materials laterally. (05 Mar 2000) |
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| spreader stoker furnace | A furnace in which fuel is automatically or mechanically spread. Part of the fuel is burned in suspension. Large pieces fall on a grate. (05 Dec 1998) |