Iota

·noun A very small quantity or degree; a jot; a particle.

II. Iota ·noun The ninth letter of the Greek alphabet (/) corresponding with the English i.

iota
ĭōta, n. indec. , = ἰῶτα, the name of the Greek ι, iota (in Gr. trisyl., in Lat. dissyl.): ut io...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
iota
iōta n indec., ἰῶτα, the name of the Greek ι, iota: ut iota litteram tollas. ...

An Elementary Latin Dictionary