downblend
（ present singular third-person ）
（ participle present ）
（ participle past ）
（ past ）
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(usually transitive, nuclear physics) To blend highly-enriched uranium, typically from decommissioned nuclear weapons, with uranium containing a low concentration of fissile uranium-235 (slightly-enriched uranium, natural uranium, or depleted uranium) in order to convert it to low-enriched uranium suitable for use as fuel in standard power reactors but not usable for a fission bomb.
downblend
To secure the material, technicians will downblend the decommissioned warhead's highly-enriched uranium by mixing it with natural uranium so that it can only be used as reactor fuel.
To secure the material, technicians will downblend the decommissioned warhead's highly-enriched uranium by mixing it with natural uranium so that it can only be used as reactor fuel.
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