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Coordinate may refer to:
It's an awkward word coordinate.
It really needs a hyphen in it to emphasise its pronunciation (loosely and commonly: coe-wordinate), and indeed, some authors spell it co-ordinate.
However, this makes it look unwieldy.
An older spelling puts a diaeresis indication symbol on the second "o": coördinate.
But this is considered archaic nowadays and few sources still use it.