x1 pertains to the Laurasian supercontinent/large subcontinent in aspect x2, more specifically associated with time period or arrangement x3
Not to be confused with Laurentia. x3 is a property of Laurasia itself (at the time in question, as determined by x1 and x2). This word could be used along the lines of other cultural gismu: x1 reflect Laurasian culture/lifestyle/"nationality" in aspect/nature x2. Confer: pangaio, gonduana, bemro, ropno, xazdo