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.
1. a means of securing; a fastening. 2. (often foll by to) affection or regard (for); devotion (to): attachment to a person or to a cause. 3. an object to be attached, esp a supplementary part: an attachment for an electric drill. 4. the act of attaching or the state of being attached.