Prefix meaning "one quintillionth"

• One-quintillionth: Prefix
• Quintillionth: Comb. form
• It means "billionth of a billionth"
• It means "quintillionth"
• Prefix meaning ''quintillionth''
• Metric prefix that's the reciprocal of exa-
• Quintillionth: Prefix
• Metric prefix between femto- and zepto-

Wikipedia Word definitions in Wikipedia
''' Atto was a Cardinal of the Catholic Church who lived in the 11th century. Born in Rome son of a noble family as a young man in 1062 he was elected by the chapter of the Milan cathedral Archbishop of Milan , Attone was elected archbishop in front of ...