You haven't really given us a lot to go on, this could refer to communication or communities etc. The meaning could change slightly depending on what it's qualifying, hence only a medium confidence level on my part.

"’CROSS-CULTURAL’ means a comparison and contrast between two cultural groups. For example, my cross-cultural study of Brazilians and Mexicans when they celebrate a birthday shows that Mexicans love to focus on cooking and sharing of the food, while Brazilians love the dancing –even grandmas are dancing the samba.
‘Intercultural’ refers to what happens when people from these two groups come together. As a Mexican, I may complain that there’s not enough food, but I love the dancing and join the group. Thus, INTERCULTURAL is what happens when the two (or more) culturally-different groups come together, interact and communicate.”
http://ixmaticommunications.com/2011/02/03/cross-cultural-vs...

P.S. It's generally written 'cross-cultural' or 'cross cultural' but not 'crosscultural'.


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Note added at 56 mins (2013-03-19 06:04:27 GMT)
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"Intercultural communication focuses on “sharing of meanings” across cultures, whereas cross-cultural communication focuses on comparisons of communication styles."
http://www.studymode.com/essays/Intercultural-Vs-Cross-Cultu...