The term 'MISSILE's Path' can be broken down into two crossword solutions: ARC (3 letters) and VECTOR (6 letters). An ARC is a curved line that forms part of the circumference of a circle or other shape. In the context of missiles, an ARC is the path that the MISSILE takes as it travels through the air. VECTOR is a term used to describe a quantity that has both magnitude and direction. In the context of missiles, VECTOR refers to the direction in which the MISSILE is travelling. Therefore, the term 'MISSILE's Path' can be understood to mean the curved trajectory and direction of a MISSILE as it travels through the air.