ترا

Also known as T, tera prefix, tera SI prefix, T-, tera-

Tera- (; symbol T) is a metric prefix denoting a factor of a short-scale trillion or long-scale billion (1012 or 1,000,000,000,000|). It was adopted in the International System of Units (SI) in 1960. The prefix is derived from the Greek word (téras), meaning "monster".