The largest continent with 60% of the earth's population; it is joined to Europe on the west to form Eurasia; it is the site of some of the world's earliest civilizations WordNet 3.0 & Open English WordNet

Asia is a landmass, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Wikipedia

Geographical continent containing the central and eastern part of Eurasia. Wikipedia Disambiguation

Continent on Earth, mainly on the Earth's northeastern quadrant Wikidata

The world's largest continent. It occupies the eastern part of the Eurasian landmass and its adjacent islands and is separated from Europe by the Ural Mountains. Asia borders on the Arctic Ocean, the Pacific Ocean, the Indian Ocean, and the Mediterranean and Red Seas in the west. It includes the largest peninsulas of Asia Minor, India, Arabia, and Indochina and the island groups of Japan, Indonesia, the Philippines, and Ceylon. OmegaWiki

A continent located east of Europe (typically delimited by the Urals), west of the Pacific Ocean, north of Oceania and south of the Arctic Ocean. Wiktionary