Crustal Meaning
/ˈkɹʌstəl/Definition, CEFR level C1, pronunciation, examples, and quiz.
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Definition
adjOf, pertaining to, or forming a crust, especially the crust of the Earth or other planet.
Sentence Examples
The crustal thickness varies by location.
Crustal deformation occurs over time.
The earthquake was caused by sudden movement in the crustal rocks.
CEFR Practice Quiz
Earthquakes often result from sudden movements in ____ plates.
CEFR Practice Quiz (Alternate)
The ____ thickness varies by location.
Word Origin & History
Etymology tree English crust Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English crustal From crust + -al.
Literary Quotations & Historical Citations
"The hope was to lower a drill through over 4,000 metres of Pacific Ocean water off the coast of Mexico and drill some 5,000 metres through relatively thin crustal rock."
— 2003, Bill Bryson, A Short History of Nearly Everything, BCA, page 189:
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CEFR Practice Quiz
Earthquakes often result from sudden movements in ____ plates.
CEFR Practice Quiz (Alternate)
The ____ thickness varies by location.