deviation. 1  the act of deviating. 2  departure from a standard or norm. 3  Statistics. the difference between one of a set of values and some fixed value, usually the mean of the set. 4  Navigation. the error of a magnetic compass, as that of a ship, on a given heading as a result of local magnetism. 5  Optics.
The definition of an invitation is a request for a person's attendance at an event. An example of an invitation is a printed card asking family and friends to come to the sender's wedding. 1  an inviting to come somewhere or do something. 2  the message or note used in inviting.  enticement or allurement.
Countdown Dial. Here is an incredible and unusual invitation that serves as a makeshift countdown timer to the wedding day itself. The card has a front wheel that the guest can turn to correctly indicate how many days are left to the wedding day itself. The couple has since tied the knot, back in 2012. IMAGE: Until Sunday.