Hydrocephalus is a buildup of fluid inside the skull that leads to brain swelling. Hydrocephalus means water on the brain.
locant. (chemistry). The portion of a chemical name, usually a number or a letter, that designates the position of an atom or group of atoms in a formula unit. 1  Facebook. 2  Twitter.
lodestone A natural magnet largely made of the mineral magnetite. Ancient explorers used lodestones as compasses. magnetite A brownish-black, iron-bearing mineral that can become strongly magnetized. As shown in its chemical formula, each molecule of magnetite (Fe 3 O 4) consists of three iron (Fe) atoms and four oxygen (O) atoms.