transcription, транскрипция: [ aɪoʊtə ]
If you say that there is not an iota or not one iota of something, you are emphasizing that there is not even a very small amount of it.
He’s never shown an iota of interest in any kind of work.
QUANT : with brd-neg , QUANT of n-uncount [ emphasis ]
You can use an iota or one iota to emphasize a negative statement. Not an iota or not one iota means not even to a small extent or degree.
Our credit standards haven’t changed one iota.
PHRASE : with brd-neg , PHR after v [ emphasis ]