(physics) Any of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties

plural of isomer bomb

(military, weaponry) a type of theoretical radiological nuclear weapon that relies on an induced rapid change in the state of nuclear isomers to generate an intense gamma ray flash.

(former name) ISIL/ISIS/Islamic State

Alternative form of credit where credit's due

(chiefly Ireland) The archipelago in the North Atlantic comprising Great Britain, Ireland and surrounding islands. / Used other than figuratively or idiomatically: see these, islands.

Alternative form of arse is gone right out of 'er

Alternative form of arse is gone right out of 'er

Alternative form of arse is gone right out of 'er

(Canada, Newfoundland English) Matters, especially economic matters, have gone very wrong; things are out of control.