Hydroxide is a diatomic anion with chemical formula OH â . It consists of an oxygen and hydrogen atom held together by a covalent bond, and carries a negative electric charge.It is an important but usually minor constituent of water. It functions as a base, a ligand, a nucleophile and a catalyst.he hydroxide ion forms salts, some of which dissociate in aqueous solution, liberating solvated hydroxide ions. Sodium hydroxide is a multi-million-ton per annum commodity chemical.
Definition of 'ward'. ward. A ward is a room in a hospital which has beds for many people, often people who need similar treatment. A toddler was admitted to the emergency ward with a wound in his chest. A ward is a district which forms part of a political constituency or local council.
ward ward 1 / wÉËd $ wÉËrd / W3 noun [countable] 1 MH a large room in a hospital where people who need medical treatment stay maternity/general/geriatric etc ward (= a ward for people with a particular medical condition) on/in the ward a young nurse's first day on the wards the other patients in the ward 2 PPV TOWN one of the small areas that a city has been divided into for the purpose of local elections â constituency 3 law SSC SCL someone, especially a child, who is under the legal ...