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Webster 1913 Edition


Momentum

Mo-men′tum

,
Noun.
;
pl. L.
Momenta
(#)
, F.
Momentums
(#)
.
[L. See
Moment
.]
1.
(Mech.)
The quantity of motion in a moving body, being always proportioned to the quantity of matter multiplied by the velocity; impetus.
2.
Essential element, or constituent element.
I shall state the several
momenta
of the distinction in separate propositions.
Sir W. Hamilton.

Webster 1828 Edition


Momentum

MOMENT'UM

,
Noun.
[L.] In mechanics, impetus; the quantity of motion in a moving body. This is always equal to the quantity of matter multiplied into the velocity.