From Longman Dictionary of Contemporary Englishjust-in-timeˈjust-in-time adjective [only before noun] technical if goods are produced or bought using a just-in-time system, they are produced or bought just before they are needed so that the company does not have to store things for a long time just-in-time manufacturing methodsFrom Longman Business Dictionaryjust-in-timeˌjust-in-ˈtime written abbreviation JIT adjective [only before a noun]MANUFACTURING if goods are produced or bought using a just-in-time system, they are produced or bought just before they are needed, reducing the cost to the firm of keeping goods for long periods of timeThe firm is worried that delays could cause problems with their just-in-time manufacturing methods.Many companies are now moving to just-in-time delivery of supplies.