What is weight?

  • (noun): (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance.
    Synonyms: weighting
    See also — Additional definitions below


In science and engineering, the weight of an object is the force on the object due to gravity. Its magnitude (a scalar quantity), often denoted by an italic letter W, is the product of the mass m of the object and the magnitude of the local gravitational acceleration g; thus: W = mg. When considered a vector, weight is often denoted by a bold letter W. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, about one-sixth as much on the Moon, and zero when in deep space far away from all bodies imparting gravitational influence.

Read more about Weight.

Some articles on weight:

Boxing Training - Training - Weight
... Boxing, like several other fighting sports, categorizes its competitors into weight classes ... so that they can be bumped down a weight class ... food up to three days before the weigh-in ceremony, in order to make weight for the fight ...
Equine Forelimb Anatomy
... During locomotion, the forelimb functions primarily for weight-bearing rather than propulsion and supports the forehand of the horse ... forelimbs together support approximately 60% of the weight of the horse, and this pattern is carried over to locomotion, where the forelimb props the weight of the horse, while ... horse moves, increasing impulsion shifts the horse's weight to the hindquarters ...
Weight Function
... A weight function is a mathematical device used when performing a sum, integral, or average to give some elements more "weight" or influence on the ... Weight functions can be employed in both discrete and continuous settings ...
Egg White - Composition
... white is about two-thirds of the total egg's weight out of its shell, with nearly 92% of that weight coming from water ... The remaining weight of the egg white comes from protein, trace minerals, fatty material, vitamins, and glucose ...

More definitions of "weight":

  • (noun): Sports equipment used in calisthenic exercises and weightlifting; a weight that is not attached to anything and is raised and lowered by use of the hands and arms.
    Synonyms: free weight, exercising weight
  • (noun): An oppressive feeling of heavy force.
    Example: "Bowed down by the weight of responsibility"
  • (noun): The relative importance granted to something.
    Example: "His opinion carries great weight"
  • (noun): A unit used to measure weight.
    Synonyms: weight unit
  • (noun): An artifact that is heavy.
  • (noun): A system of units used to express the weight of something.
    Synonyms: system of weights
  • (verb): Present with a bias.
    Synonyms: slant, angle
  • (noun): The vertical force exerted by a mass as a result of gravity.

Famous quotes containing the word weight:

    When a house is tottering to its fall,
    The strain lies heaviest on the weakest part,
    One tiny crack throughout the structure spreads,
    And its own weight soon brings it toppling down.
    Ovid (Publius Ovidius Naso)

    There is little premium in poetry in a world that thinks of Pound and Whitman as a weight and a sampler, not an Ezra, a Walt, a thing of beauty, a joy forever.
    Anna Quindlen (b. 1952)

    Man is a masterpiece of creation if for no other reason than that, all the weight of evidence for determinism notwithstanding, he believes he has free will.
    —G.C. (Georg Christoph)