| buttress | A flange of tissue protruding from the main outline of the base of a tree. (09 Oct 1997) |
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| buttress foot | A condition of the horse's foot in which there is exostosis of the extensor process of the third phalanx, with swelling and chronic inflammation at the coronary band on the anterior surface of the foot. Synonym: pyramidal disease. (05 Mar 2000) |
| buttress plate | A metal plate used to support the internal fixation of a fracture. (05 Mar 2000) |