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overlay
(redirected from overlie)

   Also found in: Dictionary/thesaurus, Legal, Encyclopedia, Wikipedia 0.01 sec.
overlay
[ō′vərlā]
to add to an existing condition or structure; to lay on top of something.

overlay,
n See onlay.
overlay, computer,
n a technique for bringing routines into memory from magnetic storage during processing so that several routines will occupy the same storage locations at different times. Overlay techniques are used when the total storage requirements for instructions exceed the available storage in memory.

overlay
a later component superimposed on a pre-existing state or condition.


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Because the lines in the eastern Pacific run parallel to the direction of plate motion, the researchers believe they directly overlie 100-kilometer-deep cells of mantle convection, which, as predicted by one model, are thought to be shaped by plate motion into longitudinal rolls.
 
 
 
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