alethiology in English dictionary alethiology Meanings and definitions of "alethiology" (logic) The branch of logic dealing with truth and error. noun (logic) The branch of logic dealing with truth and error. more Grammar and declension of alethiology alethiology ( uncountable) alethiology (uncountable) more Alethiology Sample sentences with "alethiology" Declension Stem Try again Available translations German Kurdish Kurmanji Persian Portuguese Tamil Authors