However the ISO list of the subdivisions of the UK, compiled by British Standards and the UK's Office for National Statistics, uses country to describe England, Scotland and Wales.imilarly, the British overseas territories, remnants of the British Empire, are not part of the UK. Historically, from 1801, following the Acts of Union, until 1921 the whole island of Ireland was a country within the UK. Ireland was split into two separate jurisdictions in 1921: Southern Ireland and Northern Ireland.
ionization. (chemistry). A process by which a neutral atom or molecule loses or gains electrons, thereby acquiring a net charge and becoming an ion; occurs as the result of the dissociation of the atoms of a molecule in solution (NaCl â Na + + Cl -) or of a gas in an electric field (H 2 â 2H +).
Definition of ion. 1  1 : an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons. 2  2 : a charged subatomic particle (such as a free electron)