DX - People Interact

 A meeting is a assemblage of two or more citizenries that has been convoked for the purpose of achieving a common goal through verbal interaction, such as sharing data or reaching agreement. Meetings may come face to face or practically, as liaised by communications technology, such as a telephone conference call, a skyped conference call or a videoconference. In a meeting, two or more people interact with each other to talk about one or more subjects, often in a formal scope.

Thus, a meeting may be spotted from other gatherings, such as a try encounter (not convened), a sports game or a concert (verbal interaction is incidental), a party or the companionship of friends (no common goal is to be achieved) and a presentment (whose common goal is attained mainly through the number of sales demonstrators present, not verbal interaction).
xBL.Com mercially, the term is used by meeting planners and other meeting professional persons to point to an event held at a hotel, convention center or any other venue given to in such assemblies.  In this signified, the word meeting extends a lecturing (one presentation), seminar (typically respective presentations, small audience, one day), conference (mid-size, one or more days), congress (big, various days), exhibition or trade show (with manned stands being visited by passers-by), workshop (small scale, with dynamic players), training course, team-building sitting and kick-off case.