male reproductive organ morphological measurement male reproductive organ weight 2013-01-09T17:12:23Z CMO:0001326 Not4Curation The heaviness, that is, the degree to which a physical mass is drawn toward the earth by gravity, of any of the male reproductive organs (any organ which is part of the complex of male gonads, associated ducts, and external genitalia concerned with sexual reproduction). clinical_measurement_ontology jsmith