Longman Dictionary of Contemporary English
Wiktionary
n. Any highly technical or specialized technological application or equipment, especially one that involves complex electronics or computing
WordNet
n. highly advanced technological development (especially in electronics)
Usage examples of "high technology".
He demands immediate high technology for his country and protests that only second-rate equipment is sold to the Argentine.
If all else has failed, you who heard our signal and are now reading this plaque will at least know that we once existed and achieved a high technology.
This was also a case of applying high technology and state controlled Rapid Dominance against a low-technology guerrilla warfare force.
There, I was offered a vision of a perfect future made possible by science and high technology.
You hold a high technology across hundreds of light-years of space and thousands of years of time.
In order to cope with the pressures of the Revenants' assaults, your people have used biotechnology, nanotechnology, and high technology to allow every officer in your Service to handle neural data loads beyond what one might call your design capacity.
Even with fewer people after the onslaught of the Frost Giants, the infrastructure of Westron was tottering because of the continuing failure of fragile high technology.