iota

nouns

a tiny or scarcely detectable amount
iota, scintilla, shred, smidge, smidgen, smidgeon, smidgin, tittle, whit
the 9th letter of the Greek alphabet
iota
is a member of
the alphabet used by ancient Greeks
Greek alphabet
is a type of (narrower)
the conventional characters of the alphabet used to represent speech
"his grandmother taught him his letters"
alphabetic character, letter, letter of the alphabet