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.
Definition of lubricant. 1  1 : a substance (such as grease) capable of reducing friction, heat, and wear when introduced as a film between solid surfaces. 2  2 : something that lessens or prevents friction or difficulty a social lubricant.