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.
Attachments. An attachment to an email message is any file sent with the message outside of the body of the email, meaning the message's text and possibly graphics within it, like a background or image of a signature.The attached file could be a picture, movie, audio clip, PDF or any other type of file.pening. To open an attachment in your account, you just need to open the message and then click on the attachment icon next to the email's message. The icon is a paperclip at the top of the message, and next to it is the number of attachments in the email.