Momentary (adjective)

1. Lasting for a very short time; fleeting.
2. Occurring or done quickly and suddenly.

Origin:

Late latin momentarius, from latin momentum movement, moment.

Examples:

1. The power went out for a momentary interruption.
2. He had a momentary lapse of concentration and made a mistake.
3. She had a momentary feeling of dizziness.
4. He had a momentary panic attack.
5. The storm caused a momentary disruption in the game.