Definition of: dimidiate

(di·mid′ē·āt) adjective Bot.
Divided in half; lop–sided: said of plants appearing to lack half of a member, or with halves functionally or structurally different.
—v.t. ·at·ed, ·at·ing To cut in half. [<L dimidiatus, pp. of dimidiare halve <dimidium a half <dis-apart + medius middle]
—di·mid′i·a′tion noun