internal grinding
121Mars — /mahrz/, n. 1. the ancient Roman god of war and agriculture, identified with the Greek god Ares. 2. Astron. the planet fourth in order from the sun, having a diameter of 4222 miles (6794 km), a mean distance from the sun of 141.6 million miles… …
122steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …
123Tajikistan — /teuh jik euh stan , stahn , jee keuh /, n. Tadzhikistan. * * * Tajikistan Introduction Tajikistan Background: Tajikistan has experienced three changes in government and a five year civil war since it gained independence in 1991 from the USSR. A… …
124Turkmenistan — /terrk me neuh stan , stahn /, n. a republic in central in Asia, bordering the Caspian Sea, Iran, and Afghanistan. 4,225,351; 188,417 sq. mi. (488,000 sq. km). Cap.: Ashkhabad. Also called Turkomen. Formerly, Turkmen Soviet Socialist Republic. *… …
125windmill — /wind mil /, n. 1. any of various machines for grinding, pumping, etc., driven by the force of the wind acting upon a number of vanes or sails. 2. (loosely) a wind generator; wind plant. 3. Aeron. a small air turbine with blades, like those of an …
126medicine, history of — Introduction the development of the prevention and treatment of disease from prehistoric and ancient times to the 20th century. Medicine and surgery before 1800 Primitive (primitive culture) medicine and folklore Unwritten history is not… …
127Obsidian use in Mesoamerica — Obsidian projectile point. Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre Columbian Mesoamerica. Obsidian was a highly integrated part of daily and ritual life, and its widespread and… …
128Coronary catheterization — A coronary angiogram (an X ray with radiocontrast in the coronary arteries) that shows the left coronary circulation. The distal left main coronary artery (LMCA) is in the left upper quadrant of the image. Its main branches (also visible) are the …
