The term 'PENDULUM PATH' is composed of two words: 'PENDULUM' and 'PATH'. The word 'PENDULUM' is derived from the Latin word 'pendulus', meaning 'HANGING'. It refers to an object, usually a weight suspended from a fixed point, that swings back and forth in a regular rhythm. The word 'PATH' is defined as a course or route taken by a person or object. When combined, the term 'PENDULUM PATH' refers to the curved PATH that a PENDULUM takes when it is set in motion. The crossword solution for this term is ARC, which is a curved line that forms a closed loop.