Word.ws English Dictionary

reaction mass

reaction mass noun: fuel for nuclear energy.

Noun

reaction mass (plural reaction masses)

  1. Fuel for nuclear energy.
    • A small rise in the temperature of the reaction mass increases the reaction rate, which further increases the temperature of the mass.1984, Chemical Engineering
    • Our proposal involves the use of liquid core fission reactors to heat reaction mass, probably hydrogen, to stellar temperatures; ...1981, Willard F. Libby, Talking to People, →ISBN
  2. Working mass.

Forms of reaction mass

pluralreaction masses

Questions about reaction mass

What does reaction mass mean?
Reaction mass means fuel for nuclear energy.
What part of speech is reaction mass?
Reaction mass is a noun.
What is the plural of reaction mass?
The plural of reaction mass is reaction masses.

Words near reaction mass in the dictionary

  1. reaction engine
  2. reaction engines
  3. reaction GIF
  4. reaction GIFs
  5. reaction image
  6. reaction mass
  7. reaction masses
  8. reaction mechanism
  9. reaction mechanisms
  10. reaction mixture
  11. reaction mixtures

Source and license

Adapted from Wiktionary: reaction mass (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “reaction mass.” Word.ws, https://word.ws/reaction_mass. Based on Wiktionary, CC BY-SA 4.0.