decanate noun2 •A group of parishes over which a dean presides; a deanery.These parishes are divided into 80 decanates or chapters. In each decanate there are from ten to eighteen parishes. At the head of each decanate stands the dean, — 1844 •Face, one of three parts into which each zodiac sign is divided; a decan.If any planet be in his decanate, or face, he has the least possible essential dignity — 1852 formsdecanates
