Luzon (luːˈzɒn, ; luˈson) is the largest and most populous island in the Philippines. Located in the northern portion of the Philippines archipelago, it is the economic and political center of the nation, being home to the country's capital city, Manila, as well as Quezon City, the country's most populous city. With a population of 64 million , it contains 52.5% of the country's total population and is the 4th most populous island in the world. It is the 15th largest island in the world by land area.
Luzon may also refer to one of the three primary island groups in the country. In this usage, it includes the Luzon mainland, the Batanes and Babuyan groups of islands to the north, Polillo Islands to the east, and the outlying islands of Catanduanes, Marinduque and Mindoro, among others, to the south. The islands of Masbate, Palawan and Romblon are also included, although these three are sometimes grouped with another of the island groups, the Visayas.
The name Luzon is thought to derive from lusong, a Tagalog word referring to a particular kind of large wooden mortar used in dehusking rice. A 2008 research paper by Eulito Bautista and Evelyn Javier provides an image of a lusong, explaining:
Traditional milling was accomplished in the 1900s by pounding the palay with a wooden pestle in a stone or wooden mortar called lusong. The first pounding takes off the hull and further pounding removes the bran but also breaks most grains. Further winnowing with a bamboo tray (bilao) separates the hull from the rice grains. This traditional hand-pounding chore, although very laborious and resulted in a lot of broken rice, required two to three skilled men and women to work harmoniously and was actually a form of socializing among young folks in the villages.
In old Latin, Italian, and Portuguese maps, the island is often called "Luçonia" or "Luconia."
Luções, luˈsõjʃ (also Luzones in Spanish) was a demonym used by Portuguese sailors in Malaysia during the early 1500s, referring to the Kapampangan and Tagalog people who lived in Manila Bay, which was then called Lusong (Kapampangan: Lusung, Luçon), from which Luzon was also derived.