Moment of a couple
Moment Mo"ment, n. [F. moment, L. momentum, for movimentum movement, motion, moment, fr. movere to move. See {Move}, and cf. {Momentum}, {Movement}.] 1. A minute portion of time; a point of time; an instant; as, at that very moment. [1913 Webster]

In a moment, in the twinkling of an eye. --1 Cor. xv. 52. [1913 Webster]

2. Impulsive power; force; momentum. [1913 Webster]

The moments or quantities of motion in bodies. --Berkley. [1913 Webster]

Touch, with lightest moment of impulse, His free will. --Milton. [1913 Webster]

3. Importance, as in influence or effect; consequence; weight or value; consideration. [1913 Webster]

Matters of great moment. --Shak. [1913 Webster]

It is an abstruse speculation, but also of far less moment and consequence of us than the others. --Bentley. [1913 Webster]

4. An essential element; a deciding point, fact, or consideration; an essential or influential circumstance. [1913 Webster]

5. (Math.) An infinitesimal change in a varying quantity; an increment or decrement. [Obs.] [1913 Webster]

6. (Mech.) Tendency, or measure of tendency, to produce motion, esp. motion about a fixed point or axis. [1913 Webster]

{Moment of a couple} (Mech.), the product of either of its forces into the perpendicular distance between them.

{Moment of a force}. (Mech.) (a) With respect to a point, the product of the intensity of the force into the perpendicular distance from the point to the line of direction of the force. (b) With respect to a line, the product of that component of the force which is perpendicular to the plane passing through the line and the point of application of the force, into the shortest distance between the line and this point. (c) With respect to a plane that is parallel to the force, the product of the force into the perpendicular distance of its point of application from the plane.

{Moment of inertia}, of a rotating body, the sum of the mass of each particle of matter of the body into the square of its distance from the axis of rotation; -- called also {moment of rotation} and {moment of the mass}.

{Statical moment}, the product of a force into its leverage; the same as {moment of a force} with respect to a point, line, etc.

{Virtual moment}. See under {Virtual}. [1913 Webster]

Syn: Instant; twinkling; consequence; weight; force; value; consideration; signification; avail. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Moment of a force — Moment Mo ment, n. [F. moment, L. momentum, for movimentum movement, motion, moment, fr. movere to move. See {Move}, and cf. {Momentum}, {Movement}.] 1. A minute portion of time; a point of time; an instant; as, at that very moment. [1913… …   The Collaborative International Dictionary of English

  • moment of a force — Moment Mo ment, n. [F. moment, L. momentum, for movimentum movement, motion, moment, fr. movere to move. See {Move}, and cf. {Momentum}, {Movement}.] 1. A minute portion of time; a point of time; an instant; as, at that very moment. [1913… …   The Collaborative International Dictionary of English

  • Moment of inertia — Moment Mo ment, n. [F. moment, L. momentum, for movimentum movement, motion, moment, fr. movere to move. See {Move}, and cf. {Momentum}, {Movement}.] 1. A minute portion of time; a point of time; an instant; as, at that very moment. [1913… …   The Collaborative International Dictionary of English

  • moment of rotation — Moment Mo ment, n. [F. moment, L. momentum, for movimentum movement, motion, moment, fr. movere to move. See {Move}, and cf. {Momentum}, {Movement}.] 1. A minute portion of time; a point of time; an instant; as, at that very moment. [1913… …   The Collaborative International Dictionary of English

  • moment of the mass — Moment Mo ment, n. [F. moment, L. momentum, for movimentum movement, motion, moment, fr. movere to move. See {Move}, and cf. {Momentum}, {Movement}.] 1. A minute portion of time; a point of time; an instant; as, at that very moment. [1913… …   The Collaborative International Dictionary of English

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