Search BSB. Hydrogen: Chemical element with atomic number 1. Symbol: H H is the lightest, most abundant chemical element H makes up about 75 % of the Universe's elemental mass. Hydrogen = H Hydro = Greek = water gene = Greek = creating Hydrogen has a simple atomic structure-one proton + one an electron.
Wiktionary (0.00 / 0 votes) Rate this definition: dilapidation (Noun). The state of being dilapidated, reduced to decay, partially ruined. dilapidation (Noun). The act of dilapidating, damaging a building or structure through neglect or by intention.
Decantation is a process for the separation of mixtures, by removing a layer of liquid, generally one from which a precipitate has settled.The purpose may be either to produce a clean decant, or to remove undesired liquid from the precipitate (or other layers).ecantation is a process for the separation of mixtures, by removing a layer of liquid, generally one from which a precipitate has settled.