XTG
"XTG" is an acronym that stands for "across the grain." It refers to a shaving pass in which one shaves in a direction perpendicular to that in which the hair grows. For example, if the hair grows "north-to-south," then an XTG pass may shave "east-to-west" or "west-to-east." An XTG pass can be compared with a pass that is WTG ("with the grain" or direction of hair growth) or ATG ("against the grain" or direction of hair growth).
Different kinds of passes are commonly combined into a multiple pass shaving technique. Shaving different kinds of passes comfortably can demand a finer understanding of cutting angles.