Douglas Harper's Etymology Dictionary
Wiktionary
n. 1 A very large continent that split into smaller ones in the earth’s geologic past. 2 Sometimes used to refer, due to their being composed of multiple continents, to one of the following modern landmasses: Afro-Eurasia and the Americas. (compare subcontinent)
Wikipedia
In geology, a supercontinent is the assembly of most or all of Earth's continental blocks or cratons to form a single large landmass. However, the definition of a supercontinent can be ambiguous. Many earth scientists, such as P.F. Hoffman (1999), use the term "supercontinent" to mean "a clustering of nearly all continents". This definition leaves room for interpretation when labeling a continental body and is easier to apply to Precambrian times. Using the first definition provided here, Gondwana (aka Gondwanaland) is not considered a supercontinent, because the landmasses of Baltica, Laurentia and Siberia also existed at the same time but physically separate from each other. The landmass of Pangaea is the collective name describing all of these continental masses when they were in proximity to one another. This would classify Pangaea as a supercontinent. According to the definition by Rogers and Santosh (2004), a supercontinent does not exist today. Supercontinents have assembled and dispersed multiple times in the geologic past (see table). The positions of continents have been accurately determined back to the early Jurassic. However, beyond , continental positions are much less certain.
Usage examples of "supercontinent".
The allosaurs too went into steep decline across the supercontinent as their prey animals became scarce.
From the Triassic to the Holocene, from Pangaea through the breakup of the supercontinent into what eventually became the modern configuration of continents, he liked to find his pencils sharp and where he expected them to be.
The magmatic currents of a cooling world had not been able to break up the new supercontinent, as they had the first.
That idea never washed with me, since to get the 26-million-year periodicity you had to use the late Ordovician dyings, which were obviously just the result of plate tectonics moving the supercontinent Gondwanaland over the south pole, causing an ice age.
Its origins date back to a period in earth's history when Madagascar was still part of mainland Africa (which itself had been part of the gigantic supercontinent of Gondwanaland), at which time the ancestors of the Madagascan lemurs were the dominant primate in all the world.
Of the three supercontinents, only one showed a white shoreline under infrared.
Ships could and did cross this great span of ocean, but such crossings had grown less and less common as both of the northern supercontinents lapsed into centuries of barbarism.
This was clearly the West with respect to the Lartroxian supercontinent, and if Kane had not merely made a slip of the tongue.