Trans-continental (Adjective): extending across or relating to two or more continents.

I encountered the word while reading an article.

“Design world legends Lorraine Wild, Louise Sandhaus, and Rick Valicenti recently formed the trans-continental partnership Wild LuV, which is allowing them to work together and tackle big commissions that draw on all of their talents (http://www.wildluv.com/).” (“Why Collaborate?” by Ellen Lupton)

The word used in its context means an international partnership that was spread to one or two countries.

My understanding of the word is something that is spread or relating to two or more countries.