Define 9000 Meaning

the ultimate cutoff point for an unreasonably high number. If you catch sight of anything that is over 9000, take off you scouter or HMD and crush it in your hand immediately while screaming.

what "it" is over.

9000 - the estimated power level of Son Goku in the Saiyan Saga of Dragonball Z, during his fight with Nappa.
Only in the dubbed version.

Also the focus of an incredibly popular video on Youtube.

1. The number "it" is over.

2. The answer to any numerical question.

Current estimated age of John McCain.

1. The way to signify over 9000.
2. Goku's power level.

HAL (Heuristically programmed ALgorithmic Computer)- is an artificial intelligence.

HAL became operational on January 12, 1997, at the HAL Plant in Urbana, Illinois. His first instructor was Dr. Chandra.

"The 9000 series is the most reliable computer ever made. No 9000 computer has ever made a mistake or distorted information. We are all, by any practical definition of the words, foolproof and incapable of error."

His twin is SAL 9000.

What the scouter says about Goku's power level. Over Nine thousand

A phrase that people use for something of impressive power, skill or just general fun. It stems from the Dragon Ball Z Show when Vegeta and one of his cronies come across Goku, and Vegeta's scouter reveals that Goku's power level is... OVER NINE THOUSAND!