The phrase "in a technical sense" is used to clarify or qualify something that has been said, by adding further explanation in terms of its specific details. Full definition
In any event the term «thief» was not used in a technical sense but in a common understanding as someone who had taken something he was not entitled to. (slaw.ca)
That might be true in a technical sense, but that's like saying not to work out at all until you lose fat. (coachcalorie.com)
Risk in the technical sense is the product of consequences and probability. (judithcurry.com)