spleen morphological measurement spleen weight 2010-05-17T02:03:24Z CMO:0000147 RNigam The weight of the spleen, that is, its heaviness or degree to which it is drawn toward the earth by gravity. The spleen is the highly vascular lymphoid organ which serves to store blood, disintegrate old blood cells, filter foreign substances from the blood, and to produce lymphocytes. VT:0004951 clinical_measurement_ontology