Trans has several meanings. It refers to that which is across the disciplines
between the disciplines, and beyond and outside all disciplines. 
It traverses all possible disciplines. 
To traverse means to crisscross, zigzag, 
and move laterally from side to side (Nègre, 1999; Nicolescu, 1997). 
The objective of transdisciplinary 
is to understand the present world, 
in all of its complexities, instead of focusing on one part of it (Nicolescu). 

Dr. Sue L. T. McGregor