Silicon Valley 
A name given to an area between San Jose and Palo Alto in Santa Clara County, California, US, noted for its computing and electronics industries.
- demand-led
- demand note
- demand-pull
- demantoid
- demarcate
- demarcation
- demarcation dispute
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- demassification
- demassify
- dematerialise
- dematerialization
- dematerialize
- de Maupassant, Guy
- deme
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- de' Medici
- de' Medici, Catherine
- de Medici collar
- de' Medici, Cosimo