1. dimidiate - Adjective
2. dimidiate - Verb
To divide into two equal parts.
Divided into two equal parts; reduced to half in shape or form.
Consisting of only one half of what the normal condition requires; having the appearance of lacking one half; as, 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; as, dimidiate hermaphroditism.
To represent the half of; to halve.
Source: Webster's dictionary