Line around the globe (7)

I believe the answer is:

equator

(Other definitions for equator that I've seen before include "Imaginary line around the earth's centre" , "It divides the hemispheres" , "Imaginary ring around the earth's centre" , "Circle separating northern and southern hemispheres" , "Notional line drawn around the earth" .)

I've seen this clue in The Independent.

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