JOT Meaning of JOT in English ■ verb ( ~s , ~ting , ~ted ) write quickly. ■ noun [usu. with negative ] a very small amount.OriginC15: via L. from Gk iōta , the smallest letter of the Greek alphabet (see iota ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004