Definition of fast reactor in English:

fast reactor

Syllabification: fast re·ac·tor


  • A nuclear reactor in which fission is caused mainly by fast neutrons.
    More example sentences
    • For such a leap, the country needs ‘accelerated systems’ or fast reactors which utilise thorium.
    • In fact it is proposed to turn it into more fuel which could power fast reactors for 1000 years.
    • The waste consists of 44 tonnes of ‘breeder’ fuel that was wrapped around the core of the Dounreay fast reactor, a prototype which was shut down in 1977.

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