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kinetics

American  
[ki-net-iks, kahy-] / kɪˈnɛt ɪks, kaɪ- /

noun

(used with a singular verb)
  1. the branch of mechanics that deals with the actions of forces in producing or changing the motion of masses.


kinetics British  
/ kaɪ-, kɪˈnɛtɪks /

noun

  1. another name for dynamics

  2. the branch of mechanics, including both dynamics and kinematics, concerned with the study of bodies in motion

  3. the branch of dynamics that excludes the study of bodies at rest

  4. the branch of chemistry concerned with the rates of chemical reactions

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

kinetics Scientific  
/ kə-nĕtĭks /
  1. See dynamics


Etymology

Origin of kinetics

First recorded in 1860–65; see origin at kinetic, -ics

Explanation

In physics, the study of motion is called kinetics. An astronomer investigating kinetics might be interested in the precise way the planets move. Physical kinetics is also known as dynamics, and its primary concern is the way bodies move when forces (such as gravity) are acting on them. In chemistry and biochemistry, kinetics is all about reaction rates. A chemist focused on kinetics studies the rate of various chemical reactions under varying conditions. The term kinetics stems from the Greek kinetikos, "putting in motion."

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Funds owning commodity-tied companies are benefiting from persistent inflation; Horizon Kinetics Inflation Beneficiaries ETF is up 20% in 2026.

From Barron's • May 12, 2026

Dr. Mehdi Boroujerdi, a pharmaceutical researcher and former professor, has conducted an in depth review of creatine in the Handbook of Creatine and Creatinine In Vivo Kinetics.

From Science Daily • May 4, 2026

Meanwhile, to mark Coachella’s 20th year, Poetic Kinetics brought back the famous roving Coachella astronaut in a new form as “Overview Effect.”

From Los Angeles Times • Apr. 6, 2026

"Ruben was one of the best students and for that reason he had a one-week internship at Manchester United," says Antonio Veloso - professor at the Faculty of Human Kinetics at the University of Lisbon.

From BBC • Nov. 2, 2024

Thus Abstract Dynamics is198 without the more complete treatment of Kinetics to which, as well as to Statics, the discussion of Dynamical Laws and Principles was intended to be an introduction.

From Lord Kelvin An account of his scientific life and work by Gray, Andrew

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