I*o"ta (?), n. [L., fr. Gr. . See Jot.]
1.
The ninth letter of the Greek alphabet (ι) corresponding with the English i.
2.
A very small quantity or degree; a jot; a particle.
<-- from iota being the smallest letter -->
They never depart an iota from the authentic formulas of tyranny and usurpation.
Burke.
Iota subscript Gr. Gram., iota written beneath a preceding vowel, as a,, h,, w,, -- done when iota is silent.
© Webster 1913.