angle of depression

noun phrase

Definition of angle of depression 

: the angle formed by the line of sight and the horizontal plane for an object below the horizontal

First Known Use of angle of depression

1758, in the meaning defined above

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The first known use of angle of depression was in 1758

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angle of depression

noun

Medical Definition of angle of depression 

: the angle formed by the line of sight and the horizontal plane for an object below the horizontal

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