海淀 Traditional form: 海淀 Pinyin (reading): Hǎidiàn Definitions: see 海淀區/海淀区 ( Hǎidiàn Qū) Characters: 海 - sea, ocean; maritime 淀 - marsh, swamp; sediment; to precipitate Traditional characters: 海 - sea, ocean; maritime 淀 - marsh, swamp; sediment; to precipitate