null line
noun
1 Mechanics and Geometry a line about which the moment of a given torque is zero.
2 Physics a line in space–time representing the path of a light ray, on which any two points have zero interval.
Origin
Mid 19th century.
- short metre
- shortness
- short of
- short of breath
- short order
- Short Parliament
- short-pitched
- short-range
- short rib
- short-run
- shorts
- short score
- short, sharp shock
- short-sheet
- short shrift
- short sight
- short-sighted
- short-sightedly
- short-sightedness
- short-sleeved
- short-staffed
- short-stay
- shortstop
- short story
- short subject