dimidiate /dɪˈmɪdi.ət/adjective 3/dɪˈmɪdi.eɪt/ verb 2forms 3 adjective3 •Divided into two (equal) halves. •Consisting of only one half of what the normal condition requires; having the appearance of lacking one half.a dimidiate leaf, which has only one side developed •Having the organs of one side, or half, different in function from the corresponding organs on the other side. dimidiate /dɪˈmɪdi.eɪt/ verb2 •To divide into two.[…] it may be dimidiated: for instance, half a rose and half a lis being stuck together, or half a lis and half an eagle. — 1915 •To represent one half of, or undergo dimidiation with.[…] hybridization in the same vein is the beast shown as supporters to arms granted in 1971, where a unicorn dimidiates a lion rampant. — 1973 formsdimidiated · dimidiating · dimidiates