The Collaborative International Dictionary
Demigrate
Demigrate \Dem"i*grate\, v. i. [L. demigrare, demigratum, to
emigrate. See De-, and Migrate.]
To emigrate. [Obs.]
--Cockeram.
Wiktionary
demigrate
Etymology 1 vb. (context obsolete English) To emigrate. Etymology 2
vb. To cancel or return from migration (of e.g. a computer system).