Meaning

noun a tiny or scarcely detectable amount

noun the 9th letter of the Greek alphabet

originFrom Ancient Greek ἰῶτα (iôta), ultimately from Proto-Semitic *yad- (“hand”). Doublet of jot and yodh. Sense “jot, small quantity” in reference to a phrase in the New Testament: ”one iote or one title, shall in no wise passe from the law”, iota being the smallest letter of the Greek alphabet.

Etymology from Wiktionary, CC BY-SA 3.0