iota
/aɪˈəʊtə/noun
1
- the ninth letter of the Greek alphabet (I, ι), transliterated as 'i'希腊字母表中第九个字母（译写为i）。
1.1
Iota
followed by Latin genitive Astronomy the ninth star in a constellation【天文】ι星（星座中第九颗星）：Iota Piscium.
双鱼座ι星。
2
- in sing. [usu. with negative] an extremely small amount极微小, 一点儿, 些微：
nothing she said seemed to make an iota of difference.
她所说的似乎没有起丝毫作用。
ORIGIN: iota being the smallest letter of the Greek alphabet
词源
from Greek iōta. Compare with JOT.