Objectification also commonly refers to the regarding of a person as 'a thing'. For example, sexual objectification refers to the regarding of a person as merely a non-human object, or tool, for sex.
Martha Nussbaum has argued that the objectification of something can be determined by the presence of the following factors:
Suresh Emre uses the the similar concept objectivation in the context of metaphysics. He defines subjectivation as the identity forming process and explains that when the potential/reality is mapped to a point forming the identity the potential/reality cannot be contained in the point and has to express itself as an orthogonal flow emerging from the identity center. He calls this flow objectivation.