plethory noun2 •(no longer used) A plethora.[T]he appetite falls down like a horseleech, when it is ready to burst with putrefaction and an unwholesome plethory […]. — 1651 •(no longer used) A plethora; a dangerous excess of something.‘It is, indeed, owing to a plethory of matter that his style is so faulty.’ — 1791 formsplethories
