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.
Organic Chemistry/Alkenes/Cycloalkenes - Cycloalkenes. 1  A cycloalkene (also sometimes called a cycloolefin) is a type of alkene hydrocarbon which contains a closed ring of carbon atoms. The prefix cyclo- comes from ancient Greek and in this case means round.