The Collaborative International Dictionary
Dimidiating
Dimidiate \Di*mid"i*ate\, v. t. [imp. & p. p. Dimidiated; p. pr. & vb. n. Dimidiating.]
To divide into two equal parts. [Obs.]
--Cockeram.(Her.) To represent the half of; to halve.
Wiktionary
dimidiating
vb. (present participle of dimidiate English)