- Having opposable first digits on both the feet and the hands, used for gripping and climbing. Many primates are quadrumanous.
- Four-handed; having all four feet fitted for use as hands: said of mammals, as opossums, etc.; specifically, of or pertaining to the <em>Quadrumana.</em> Also <internalXref urlencoded="quadrimanous">quadrimanous</internalXref>.
- Having four hands; of or pertaining to the Quadrumana.
- Having four <xref>feet</xref> whose first <xref>digits</xref> are <xref>opposable</xref>; applies to all non-human <xref>primates</xref>.