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supercapacitor
supercapacitor n. 
/ˈsjuːpəkəˌpasᵻtə/,
Brit. /ˈsuːpəkəˌpasᵻtə/
, /ˈsuːpəkəˌpasᵻtə//ˈsjuːpəkəˌpasᵻtə/U.S. /ˈsupərkəˌpæsədər/
Electronics a capacitor with exceptionally large capacity; spec. one that employs electrochemical cells and large surface-area electrodes with double-layer capacitance; also called ultracapacitor./ˈsupərkəˌpæsədər/ΚΠ
1962 Analog Sci. Fact & Sci. Fiction Apr. 107/2 This aspect as a super-capacitor has application in an entirely different area... More and more interest is developing in the production of ultra-intense magnetic fields.
1992 RS Components: Electronic & Electr. Products July 689/2 Super capacitor backup retains a programme for up to 3 days in the handheld programmers memory.
2006 New Scientist 25 Mar. 47/2 The team designed a float that amplifies its movement to deliver maximum acceleration to Cheung's device, and electronics to store the electricity it generates in a super-capacitor.
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