That acts as a bridge (in many contexts)(adjective)
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Use "bridging" in a sentence
"So that might mean that we see the U.S. getting much more involved down the road offering what they call bridging proposals, to bridge the two sides."
"In some cases they may have to do what they call bridging studies with the resident population simply to show that what worked in the United States does works, using population of that particular country."
"I like the fact that other people are working hard to make this literature approachable for a whole new swath of the global community, and I like seeing the approaches other people take in bridging some technical issues between the two languages: the different use of tenses, the things that are left unstated in Japanese, the details that must sometimes be filled in to have the English sentence make sense."