subcritical

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adjective sub·crit·i·cal \-ˈkri-ti-kəl\

Definition of subcritical

  1. 1 :  less or lower than critical in respect to a specified factor

  2. 2a :  of insufficient size to sustain a chain reaction a subcritical mass of fissionable materialb :  designed for use with fissionable material of subcritical mass a subcritical reactor

1823

First Known Use of subcritical

1823


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