strontium unit

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Related to Sunshine units: Strontium unit

strontium unit

[′strän·tē·əm ‚yü·nət]
(nucleonics)
A unit of concentration of strontium-90 in a medium relative to the concentration of calcium, equal to 10-12 curie of strontium per gram of calcium. Abbreviated SU. Also known as sunshine unit (deprecated usage).