just-in-time adjective 3just in time adverb 1 adjective3 •Taking place at the time when it is needed, and not in advance. •Of a manufacturing system in which components are delivered at the precise time required, thus minimizing inventory carrying costs. •Performing compilation of code on the client machine immediately before execution. just in time adverb1 •At the last possible moment; just before or within the assigned time.I very nearly drove into the car in front, but thankfully I managed to stop just in time.I was about to make a sarcastic remark but caught myself just in time.
