While the moment in time at which a particular nucleus decays is unpredictable, a collection of atoms of a radioactive nuclide decays exponentially at a rate described by a parameter known as the half-life, usually given in units of years when discussing dating techniques.
DEFINITION of 'Attachment'. A legal term referring to the action of seizing property in anticipation of a favorable ruling for a plaintiff who claims to be owed money by the defendant. Next Up.
Definition of attachment. 1  1 : a seizure by legal process; also : the writ or precept commanding such seizure. 2  2a : the state of being personally attached : fidelity attachment to a causeb : affectionate regard a deep attachment to nature. 3  3 : a device attached to a machine or implement.