1 a: an act, process, or instance of passing through or over : passage b: change , transition c (1): conveyance of persons or things from one place to another (2): usu. local transportation especially of people by public conveyance ; also : vehicles or a system engaged in such transportation 2 a: passage of a celestial body over the meridian of a place or through the field of a telescope b: passage of a smaller body (as Venus) across the disk of a larger (as the sun) 3: a theodolite with the telescope mounted so that it can be transited
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