PRD meaning in Country Specific ?

The Pearl River Delta Metropolitan Region (PRD; Chinese: 珠江三角洲城市圈; pinyin: Zhūjiāng Sānjiǎozhōu Chéngshìquān; Portuguese: Delta do Rio das Pérolas (DRP)) is the low-lying area surrounding the Pearl River estuary, where the Pearl River flows into the South China Sea. It is one of the most densely urbanized regions in the world, and is often considered a megacity. It is now the wealthiest region in South China and one of the wealthiest in the whole of China along with the Yangtze River Delta in East China and Jingjinji in North China. The region's economy is referred to as Pearl River Delta Economic Zone. It is also part of the Guangdong-Hong Kong-Macau Greater Bay Area.

The PRD is a megalopolis, with future development into a single mega metropolitan area, yet itself is at the southern end of a larger megalopolis running along the southern coast of China, which include metropolises such as Chaoshan, Zhangzhou-Xiamen, Quanzhou-Putian and Fuzhou. The nine largest cities of the PRD had a combined population of 57.15 million at the end of 2013, comprising 53.69% of the provincial population. According to the World Bank Group, the PRD has become the largest urban area in the world in both size and population. The region's traditional language is Cantonese; in the late 20th century and the 21st century, due to the high inflow of migrant workers coming from other regions, Mandarin has gradually became a lingua franca.

The west side of this region, along with Chaoshan, was also the source of much Chinese emigration from the 19th to the mid 20th centuries, including to the Western world, where they formed many Chinatowns. Today, much of the Chinese diaspora in the US, Canada, Australia, Latin America, and much of Southeast Asia traces their ancestry to the west side of this region.