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Pebble bed reactor


a type of nuclear reactor which is graphite-moderated and gas-cooled, with fuel elements in the form of pellets

A pebble bed reactor is a type of Very High Temperature reactor.
Word Origin



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  • Pebble-dash

    noun 1. an exterior wall finish composed of mortar against which, while still wet, small pebbles have been thrown and pressed in. noun 1. (Brit) a finish for external walls consisting of small stones embedded in plaster

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    noun 1. (NZ) a small ornamental garden mainly composed of an arrangement of pebbles

  • Pebble-heater

    noun 1. a heat exchanger utilizing refractory pellets to store and give off heat.

  • Pebble-leather

    [peb-uh l] /ˈpɛb əl/ noun 1. a small, rounded stone, especially one worn smooth by the action of water. 2. Also called pebble leather. leather that has been given a granulated surface. 3. any granulated or crinkled surface, especially of a textile. 4. a transparent colorless rock crystal used for the lenses of eyeglasses. 5. […]

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