Definitions for attosecond
Overview of noun attosecond
The noun attosecond has 1 senses? (no senses from tagged texts)
1. attosecond
(one quintillionth (10^-18) of a second; one thousandth of a femtosecond)
(one quintillionth (10^-18) of a second; one thousandth of a femtosecond)
