momentum

/ˌmoʊˈmɛntəm/ noun C1

Of a body in motion: the tendency of a body to maintain its inertial motion; the product of its mass and velocity, or the vector sum of the products of its masses and velocities. (countable, uncountable)
Strength or force gained by motion or movement. (countable, uncountable)
The impetus, either of a body in motion, or of an idea or course of events; a moment. (countable, uncountable)
The surmise of an accelerated price trend in the analysis (technical or fundamental) of an asset. (countable, uncountable)

Plural momentums

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From the library

It was too late, however, for we were rapidly gathering momentum, and an instant later had shot clear of the station.

The Memoirs of Sherlock Holmes, p. 115 · B2

Despite these minor problems, the four-day week is definitely gaining momentum.

The Four-Day Workweek, p. 1 · B2

Once you initiate the process, the perceived emotional threat often dissipates, making it surprisingly easy to maintain your momentum.

The Emotional Roots of Procrastination, p. 1 · C1

Authors carefully construct their sentences to create a specific musicality, using short phrases to build momentum or flowing syntax to evoke tranquility.

The Art of Compromise in Translation, p. 1 · C1

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