| Ice age |
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noun ice age
- Any of several cold periods in the history of the earth marked by episodes of extensive glaciation alternating with episodes of relative warmth
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| igneous |
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adjective - Pertaining to, having the nature of, fire; containing fire; resembling fire; as, an appearance
- (geology) Resulting from, or produced by, the action of great heat; with rocks, it could also mean formed from lava/magma; as, granite and basalt are rocks
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| infiltration |
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noun
- The act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.
- The substance which has entered the pores or cavities of a body.
- The act of entering a physical location and/or organization secretly.
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| interglacial |
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adjective
- Of or pertaining to a period between ice ages
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| intratelluric |
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adjective
- (geology) Relating to or situated in the interior of the Earth.
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| intrude |
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verb (intrud, ing)
- to enter without permission
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| isostasy |
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noun - (geology) the buoyancy of the Earth's continents floating on the magma
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