The theory, first advanced by Alfred Wegener, that Earth's continents were originally one land mass. Pieces of the land mass split off and migrated to form the continents.
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Continental drift is the movement of the Earth`s continents relative to each other by appearing to drift across the ocean bed. The speculation that continents might have `drifted` was first put forward by Abraham Ortelius in 1596. The concept was independently and more fully developed by Alfred Wegener in 1912, but his theory was rejected by so......
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http://en.wikipedia.org/wiki/Continental_drift
The theory that horizontal movement of the earth's surface causes slow, relative movements of the continents toward or away from one another.
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http://jersey.uoregon.edu/~mstrick/geology/geo_glossary_page.html
large-scale horizontal movements of continents relative to one another and to the ocean basins during one or more episodes of geologic time. This ... [12 related articles]
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http://www.britannica.com/eb/a-z/c/134
A term applied to early theories supporting the possibility that the continents are in motion over the Earth's surface.
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http://www.chemistry-dictionary.com/definition/continental+drift.php
Continental drift is the movement of the Earth's continents. The land masses are hunks of Earth's crust that float on the molten core. The ideas of continental drift and the supercontinent of Pangaea were presented by A. Wegener in 1915.
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http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
The theory that horizontal movement of the earth's surface causes slow, relative movements of the continents toward or away from one another.
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http://www.encyclo.co.uk/local/21455
The hypothesis, proposed by Alfred Wegener, that today's continents broke off from a single supercontinent and then plowed through the ocean floors into their present positions. This explanation of the shapes and locations of Earth's current continents evolved into the theory of plate tectonics.
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The theory that the continents have moved in relation to one another.
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http://www.evcforum.net/WebPages/Glossary_Geology.html
The theory that horizontal movement of the earth's surface causes slow, relative movements of the continents toward or away from one another.
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http://www.fossilmall.com/Science/Glossary.htm
Theory that suggests that the Earth's crust is composed of several continental plates that have the ability to move. First proposed by A. Snider in 1858 and developed by F.B. Taylor (1908) and Alfred Wegener (1915).
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http://www.physicalgeography.net/physgeoglos/c.html
In geography, continental drift is the movement by which, according to one theory, the continents arrived at their present positions after breaking off from a single original mass of land.
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http://www.probertencyclopaedia.com/browse/AC1.HTM
a geological theory proposed to account for the shape of Earth's surface. It presumes that the present continents were originally one large land mass which broke up and which have drifted to their present positions. Since 1975 so much evidence in support of this theory has been found that it is no longer questioned.
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http://www.seafriends.org.nz/books/glossary.htm
[
n] - the gradual movement and formation of continents (as described by plate tectonics)
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http://www.webdictionary.co.uk/definition.php?query=continental%20drift
movement of continents resulting from the motion of earth's plates
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https://sciencetrek.org/sciencetrek/topics/dinosaurs/glossary.cfm
noun the gradual movement and formation of continents (as described by plate tectonics)
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https://www.encyclo.co.uk/local/20974
Click images to enlargeIn geology, the theory that, about 250–200 million years ago, the Earth consisted of a single large continent (Pangaea), which subsequently broke apart to form the continents known today. The theory was first proposed in 1912 by German meteorologist Alfred Wegener, but such vast continental mov...
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https://www.encyclo.co.uk/local/21221
the lateral movement of continents resulting from the motion of crustal plates. Cf. plate tectonics.
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https://www.infoplease.com/dictionary/continental-drift
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