# angular momentum

noun, Physics.
1.
the product of the moment of inertia of a body about an axis and its angular velocity with respect to the same axis.
Also called moment of momentum.
Origin of angular momentum
1865-1870
1865-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for angular momentum
Historical Examples
• angular momentum one point one times ten to the twenty-first gram centimeters squared per second.

Gordon Randall Garrett
• On this basis we can predicate the principles of linear and angular momentum, as in 15.

• The elimination of ψ between the equation of conservation of angular momentum about the vertical, viz.

• The second general result is the Principle of angular momentum.

• I writhed and squirmed and made every use of the law of conservation of angular momentum until I had my back to Nelly.

John Berryman
• When it came around again, he would be able to compute the angular momentum of the gigantic rock.

Gordon Randall Garrett
British Dictionary definitions for angular momentum

## angular momentum

noun
1.
a property of a mass or system of masses turning about some fixed point; it is conserved in the absence of the action of external forces
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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angular momentum in Science
 angular momentum   (āng'gyə-lər)    A measure of the momentum of a body in rotational motion. The angular momentum of rigid bodies is conserved; thus, a spinning sphere will continue to spin unless acted on by an outside force. Changes in angular momentum are equivalent to torque. In classical mechanics, angular momentum is equal to the product of the angular velocity of the body and its moment of inertia around the axis of rotation. It is a vector quantity; the vector points up along the axis of counterclockwise rotation. In quantum mechanics, the angular momentum of a physical system is quantized and can only take on discrete values. See also Planck's constant, spin.
The American Heritage® Science Dictionary
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### Difficulty index for angular momentum

Few English speakers likely know this word

### Word Value for angular

8
12
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