iota

The ninth letter of the Greek alphabet (Ι, ι).

As a Greek numeral, iota represents ten.

There are twelve iotas on that page.

The Latin letter Ɩ (minuscule: ɩ).

A jot; a very small, insignificant quantity.

They never depart an iota from the authentic formulas of tyranny and usurpation.

His expression had not changed one iota except perhaps for an additional tightening of his lips.

A bank account that earns interest and pays it to a third party, generally a charity; the principal is typically being held in escrow by the accountholder.