From Longman Dictionary of Contemporary Englishiotai‧o‧ta /aɪˈəʊtə $ -ˈoʊtə/ noun → not one/an iota
Examples from the Corpus
iota• Nothing she said seemed to make an iota of difference.• And, as far as she could see, he hadn't changed one iota!• I can not see how it aids justice one iota for that to happen.• No piecemeal liberal reform will make one iota of difference.• We have heard not one iota of evidence or heard any defense the suspect may have in this case.• It has a 70% crystal content and it doesn't alter its shape or size one iota.• The gale raced through the room without stirring one iota of dust, yet it was blowing Rincewind's eyelids inside out.Origin iota (1600-1700) Latin Greek, name of the fifth and smallest letter of the Greek alphabet 