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.
1 Saying you are too tired is not an acceptable excuse. 2  If you declined an invitation to a party you should understand that other friends may have accepted the invitation. 3  It is in very poor taste for you to sit at a bar or other party and text or call your friends at the party you chose not to attend.arnings. 1  Do not be rude or mean when you say no to an invitation. 2  Do not repeatedly reject invitations from the same individual or group. 3  If you have accepted an invitation, you have made a commitment to attend. 4  If you declined an invitation to a party you should understand that other friends may have accepted the invitation.