momentum

n. force of movement; product of the mass of a body of matter multiplied by its velocity (Physics, Mechanics); strength or motivation derived from an initial effort

In classical mechanics, momentum (pl. momenta; SI unit kg m/s, or, equivalently, N•s) is the product of the mass and velocity of an object. For more accurate measures of momentum, see the section "modern definitions of momentum" on this page. It is sometimes referred to as linear momentum to distinguish it from related subject of angular momentum.
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n. momentum, force of movement; product of the mass of a body of matter multiplied by its velocity (Physics, Mechanics); strength or motivation derived from an initial effort

(n.)
The quantity of motion in a moving body, being always proportioned to the quantity of matter multiplied into the velocity; impetus.
  

(n.)
Essential element, or constituent element.
  

The amount of acceleration of an economic, price, or volume movement. A trader that follows a movement strategy will purchase stocks that have recently risen in price.