Also found in: Legal.
Related to dimidiate: immediate
1. divided in halves
2. (Biology) biology rare having one of two sides or parts less developed than the other: dimidiate antlers.
(Heraldry) (tr) heraldry to halve (two bearings) so that they can be represented on the same shield
[C17: from Latin dīmidiāre to halve, from dīmidius half, from dis- apart + medius middle]
Past participle: dimidiated