Stereotomic architecture is the architecture of subtraction or carving away of solid form. The word is derived from the two Greek roots 'stereo' meaning three-dimensional and 'tomos' meaning to cut. It relates to but is not synonymous withe stereometric forms. It can be contrasted with the term tectonic that refers to the architecture of addition or assembly, implying the accretion of elemental components . Both terms derive from the theoretical works of Gottfried Semper.