1 MOVEMENT (U) the process of moving or the way that someone or something moves: The rocking motion of the boat made Sylvia feel sick.2 MOVING YOUR HEAD OR HAND (C) a single movement of your hand or head, especially done in order to communicate something: He summoned the waiter with a motion of his hand.3 SUGGESTION AT A MEETING (C) a proposal that is made formally at a meeting and then decided on by voting: motion to do sth/motion that: We will now vote on the motion that membership charges should rise by 15%. | pass/carry a motion (=accept it by voting): The motion was carried by 15 votes to 10. | propose/put forward a motion (=make a proposal): I'd like to propose a motion to move the weekly meetings to Thursdays. | reject a motion (=not accept it) | motion denied (=used by a judge in a law court to refuse a suggestion by one of the lawyers)4 in motion formal or technical moving from one place or position to another: a photograph of a frog in motion5 go through the motions to do something because you have to, even though you do not want to do it: The mayor said he enjoyed the party, but you could see he was only going through the motions.6 set/put sth in motion to start a process or series of events that will continue for some time: The Church voted to set in motion the process allowing women to be priests..7 in slow motion if a film is shown in slow motion, it is shown more slowly than usual so that all the actions can be clearly seen: Let's look at that goal in slow motion.8 BOWELS (C) especially BrE a word meaning an act of emptying your bowels, used especially by doctors and nurses—see also: time and motion study 2 verb (I, T) to give someone directions or instructions by moving your hands: motion (for) sb to do sth: The police officer motioned for me to pull over. | motion to sb to do sth: He motioned to her to be quiet. | motion sb in/out etc: I saw her motioning me into the room.
Longman dictionary of contemporary English. 2004.