anangioplasia, anangioplastic 1. The imperfect vascularization (formation of new blood vessels) of a part due to poorly formed or unformed blood vessels. 2. Imperfect vascularization of a part due to nonformation of vessels, or vessels with inadequate caliber (diameter of a hollow tubular structure). Found on http://www.wordinfo.info/words/index/info/view_unit/130/