role of role material entity measurand role A role borne by a material entity and realized in an assay which achieves the objective to measure the magnitude/concentration/amount of the measurand in the entity bearing evaluant role. Person: Alan Ruttenberg, Jie Zheng https://en.wiktionary.org/wiki/measurand https://github.com/obi-ontology/obi/issues/778 measurand role metadata complete