australia
n. uncountablen. a large country and continent in the Southern Hemisphere between the Indian and Pacific oceans. It is famous for its unique animals like kangaroos and its vast, dry interior.
n. a continent and sovereign country located in the Southern Hemisphere, comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. In a geological context, it refers to the major tectonic plate and landmass characterized by its relative stability and ancient crust.
Australia is home to many unique animals.
Geologists study the ancient rock formations in Western Australia to understand the early history of our planet.
While often categorized as a single landmass, Australia sits upon a complex tectonic plate that has remained geologically isolated for millions of years, preserving a unique fossil record.
First attested 16th century, from Latin terra austrālis incōgnita (“unknown southern land”), from auster (“the south wind”). Used also in 1693 (quotation below). Popularised by Matthew Flinders in 1814 (quotation below). By surface analysis, Austral- + -ia. Distantly cognate to Austria, containing the same Proto-Indo-European root, but through German where it retained the earlier sense of “east” rather than “south”. See also Terra Australis.
Proper noun — typically used without an article unless referring to specific regions or historical periods.