coöriginal

It would doubtless be out of place to enter here into any investigation in regard to the origin of our ideas; but I think it will be apparent, that the notion of continuity is coöriginal with that of personal identity, and therefore, antecedent to argumentation[.]

In operations on lines in space, it is convenient to substitute for some of the given lines other lines, equal, and therefore parallel, to the given ones, but passing through a point in space common to themselves and the other given lines; so that all the lines may be coöriginal.