Trillionth
Trillionth is the fractional quantity that equals one divided by a trillion. In numeric terms it is 1/1,000,000,000,000, or 1×10−12. In decimal form this is 0.000000000001. The term is used to describe extremely small portions or probabilities, as well as tiny scales in science and engineering.
Scale context is important. In the short-scale system common in modern English-speaking countries, a trillion is
Common examples of trillionths appear in measurements and quantities. A trillionth of a meter is a picometer,
Etymology-wise, the word trillionth is formed from trillion plus the ordinal suffix -th. The root trillion traces