grinding plant

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• Grinding slab — In archaeology, a grinding slab is a ground stone artifact generally used to grind plant materials into usable size, though some slabs were used to shape other ground stone artifacts. Some grinding stones are portable; others are not and, in fact …   Wikipedia

• Herbivore adaptations to plant defense — Herbivores are dependent on plants for food, and have coevolved mechanisms to obtain this food despite the evolution of a diverse arsenal of plant defenses against herbivory. Herbivore adaptations to plant defense have been likened to “offensive… …   Wikipedia

• Cryogenic grinding — Cooling system of a cryogenic grinder An Example of a solenoid …   Wikipedia

• Mustard plant — For the prepared condiment, see Mustard (condiment). For other uses of the term mustard , see Mustard (disambiguation). Mustard Indian mustard flower (Brassica juncea L. Czern) Scientific classification …   Wikipedia

• Cement kiln — Cement kilns are used for the pyroprocessing stage of manufacture of Portland and other types of hydraulic cement, in which calcium carbonate reacts with silica bearing minerals to form a mixture of calcium silicates. Over a billion tonnes of… …   Wikipedia

• cement — cementable, adj. cementer, n. cementless, adj. /si ment /, n. 1. any of various calcined mixtures of clay and limestone, usually mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various… …   Universalium

• Vicat Cement — is a French company manufacturing cement, aggregates and ready mix concrete in four continents.HistoryThe company was established in 1853 by Joseph Vicat (1821 1902), son of Louis Vicat, the cement making pioneer. His cement plant was at Genevrey …   Wikipedia

• ornithischian — /awr neuh this kee euhn/, n. 1. any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Cf. saurischian. adj. 2. belonging or pertaining to the Ornithischia. [1900 05; < NL Ornithischi(a) (ornith ORNITH +… …   Universalium

• Stone tool — A stone tool is, in the most general sense, any tool made of stone. Although stone tool dependent cultures exist even today, most stone tools are associated with prehistoric societies that no longer exist.The study of stone tools is often called… …   Wikipedia

• Guinea pig — For the domestic pig breed, see Guinea Hog. For other uses, see Guinea pig (disambiguation). Guinea pig …   Wikipedia

• Tool stone — In archaeology, a tool stone is a type of stone that is used to manufacture stone tools. Generally speaking, tools that require a sharp edge are made using cryptocrystalline materials that fracture in an easily controlled conchoidal manner.… …   Wikipedia