Topic: GEOGRAPHY
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el‧e‧va‧tion
1 [singular]TM a height above the level of the sea
2 [uncountable] formal an act of moving someone to a more important rank or position
3 [uncountable and countable] formal an increase in the amount or level of something : 
a sudden elevation of blood pressure
a sudden elevation of blood pressure4 [countable] technicalAVD an upright side of a building, as shown in a drawing done by an architect (=person who plans buildings) : the front elevation of a house
the front elevation of a house5 [countable] technicalPMW the angle made with the horizon by pointing a gun : The cannon was fired at an elevation of 60 degrees.
The cannon was fired at an elevation of 60 degrees.