1 definition by brianriot
The momentary panic that occurs when something irreversible goes wrong. Can also be used to describe something that turns out to be reversible although you were worried at the time it wasn't.
1.Dave sent his girlfriend pictures of himself with another woman, by accident, regretting it an ohnosecond later.
2. I experienced an ohnosecond when i realised my head was stuck between the railings.
2. I experienced an ohnosecond when i realised my head was stuck between the railings.
by brianriot July 14, 2006