special nuclear material
(redirected from Category three special nuclear material)special nuclear material
[′spesh·əl ′nü·klē·ər mə′tir·ē·əl] (nucleonics)
Fissionable and related material controlled directly by the Atomic Energy Commission, such as uranium enriched in the isotopes 235U and 233U, and plutonium.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.