albiduria al·bi·du·ri·a (āl'bĭ-d&oobreve;r'ē-ə, -dy&oobreve;r'-) or al·bi·nu·ri·a (-n&oobreve;r'ē-ə, -ny&oobreve;r'-) n. The passing of pale or white urine having a low specific gravity.