Used as a na-adjective to describe something involving specialized knowledge, technology, or technique. Common in compound terms like テクニカルサポート.
このマニュアルはとてもテクニカルで、初心者には難しい。
This manual is very technical and difficult for beginners.
テクニカルな問題が発生したので、専門家に相談した。
A technical problem occurred, so I consulted an expert.
A technical problem has occurred.
He handles the ball very technically.
technical diving