Extension and Ordinality

To 'extend' means to 'increase from a given', and, hence, connotes an ordinal process.  Thus, while the common use of 'extension' is etymologically proper, the seminal Philosophical one is not.  For, while 'building extension' and 'extension of a period to pay' signify adding to a whence, Descartes' 'Extension', the essence of Corporeality in his system, does not.  In contrast, his concept of Geometrical Space is ordinal, as is expressed by the centrifugal enumeration of its points with respect to a center, and, thus, does possess 'extension'.  So, in the absence of an application of that model to Corporeality, e. g. with Mind as the center of Body, or with the Universe as emanating from God, his prominent use of the term 'Extension' in the Meditations and the Principles is profoundly erroneous.