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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Past participle: dimidiated
Collins English Verb Tables © HarperCollins Publishers 2011