adj. 1.of or relating to technique 2.characterizing or showing skill in or specialized knowledge of applied arts and sciences 3.of or relating to proficiency in a practical skill 4.of or relating to a practical subject that is organized according to scientific principles 5.resulting from or dependent on market factors rather than fundamental economic considerations 6.of production of chemicals for commercial purposes especially on a large scale technical n. 1.a pickup truck with a gun mounted on it 2.(basketball) a foul that that can be assessed on a player or a coach or a team for unsportsmanlike conduct